Tools/Maintenance

The BKD-1.2 Hydraulic Brake Bleed Kit will bleed most models of DOT fluid-based hydraulic disc brakes, including models made by SRAM®, Formula®, Hayes®, and Hope®. Bleeding of hydraulic brakes removes air bubbles and contaminants from the braking system, for long-lasting components and peak performance. The BKD-1.2 is built for the rigors of daily commercial use and includes two syringes, hoses with shutoff clips, multi-size bleed blocks, and a set of our unique mountable syringe holders, as well as multiple hose fittings to fit the multiple standards found on hydraulic bicycle brake systems. Every part is replaceable and available from Park Tool. Housed in a rugged storage case. Includes: - Two 20 mL syringes Two hose assemblies with shutoff clips - Two 10 mm/12 mm universal bleed blocks - Two 11 mm bleed blocks for Hayes® systems -  Two adjustable syringe holders -  M5 x 0.8 adapters— SRAM® (x2) -  M6 x 1.0 adapter— universal (x2) - Bleeding Edge-specific fitting — SRAM® -  Hose compression sleeve — universal -  Set of spare O-rings and hose -  Replacement parts available -  Brake fluid not included NOTE: The BKD-1.2 is for DOT fluid-based hydraulic bicycle brake systems only. DOT fluid and mineral oil should never be mixed in the brake system or in their respective service tools. Cross-contamination of brake fluid may cause seal failure which may result in brake failure. For mineral oil brake systems use the Park Tool BKM-1.2 Hydraulic Brake Bleed Kit — Mineral Oil.

The BKM-1.2 Hydraulic Brake Bleed Kit will bleed most models of mineral oil-based hydraulic bicycle disc brakes, including models made by Shimano®, Magura®, TRP®, Tektro®, Trick Stuff®, SRAM® DB8, Campagnolo®, Promax®, and Clarks®. Bleeding of hydraulic brakes removes air bubbles and contaminants from the braking system, for long-lasting components and peak performance. The BKM-1.2 is built for the rigors of daily commercial use and includes two syringes, hoses with shutoff clips, multi-size bleed blocks, a bleed funnel, and a set of our unique mountable syringe holders, as well as multiple hose fittings to fit the multiple standards found on hydraulic bicycle brake systems. Every part is replaceable and available from Park Tool. Housed in a rugged storage case. Includes: -  Two 20 mL syringes -  Two hose assemblies with shutoff clips -  One hose assembly with integrated fitting for bleed nipples such as those found on Shimano® mineral oil brake systems -  One open-ended hose assembly -  Bleed funnel with stopper -  Two 10 mm/12 mm universal bleed blocks -  Two 11 mm bleed blocks -  Two adjustable syringe holders -  M4 x 0.7 adapters — SRAM® DB8, Trick Stuff®, Campagnolo® (x2) -  M5 x 0.8 adapter — Formula™ Cura™, Tektro®, Hayes® (x2) -  M6 x 0.75 adapter — Magura® -  M6 x 1.0 adapters — universal (x2) -  M6 x 1.0 adapter — Promax® -  M7 x 0.75 adapter — Shimano® -  Hose compression sleeve — universal -  Fluid disposal bag -  Set of spare O-rings and hose -  Replacement parts available -  Brake fluid not included NOTE: The BKM-1.2 is for mineral oil-based hydraulic bicycle brake systems only. DOT fluid and mineral oil should never be mixed in the brake system or in their respective service tools. Cross-contamination of brake fluid may cause seal failure which may result in brake failure. For brakes using DOT fluid use the Park Tool BKD-1.2 Hydraulic Brake Bleed Kit — DOT.

The 37-piece SBS-3 from Park Tool is a comprehensive, shop-quality set of sockets, hex bits, and Torx compatible drivers selected specifically to tackle a wide variety of common bike repair needs. The SBS-3 also includes flat-faced sockets in common sizes for work on suspension forks. Ideal for use with Park Tool torque wrenches, the 3/8" drive bits and sockets are forged from tough, chrome vanadium steel and nickel chrome plated for lasting durability.

Designed and built specifically for a wide variety of bicycle hex work the THH-1 is a set of eight common sizes of professional quality T-Handle hex wrenches built for speed, efficiency, leverage and a perfect fit. Soon to become your favorite hex set, the THH-1 includes a handy tool holder that mounts to any vertical surface, including pegboard and solid surfaces (fasteners not included). - Carefully selected combination of Chrome Vanadium and S-2 tool steels - 2, 2.5, 3, 4, 5, 6, 8 and 10mm hex wrenches included - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Machined, chamfered tips allow easier insertion into hex fittings - Integrated “Strip-Gripper” twisted hex that makes removal of most bolts with stripped or over-sized hexes fast and easy - Sliding T-handle creates increased leverage and multiple access positions - Tool holder is included with the set and mounts to any wall, bench or tool box, perfectly positioning each wrench for easy access and storage

The tire lever, though seemingly one of the simplest and most basic of cycling tools, is one commonly used by almost every cyclist, and unfortunately, one often responsible for unnecessary frustration. Really, what is more fun than flatting far away from home, being thrilled you lugged that spare tube and pump, and then having your tire levers snap in two? Pedro's award-winning, universally loved tire levers feature molded box construction and a proprietary plastic composite blend that makes them the strongest levers available. The unique chisel tip shape easily inserts beneath the tire bead and the slightly thicker shape keeps the lever securely in place. Additionally, the bold shape of the lever and helpful dual spoke hooks makes removal of even the tightest tires a simple task. - Award-winning and universally loved - Molded box construction and proprietary plastic blend makes these the strongest levers available - Chisel tip shape is easy to insert beneath the bead and the slightly thicker shape keeps the tire lever from slipping - Bold shape makes it easy to remove the tightest of tires without bending or breaking

Our Classic LITE chain lube is a liquid plastic and through polymerization forms long-lasting plating on all chain surfaces. "Riding in" forms an extremely low-friction plating. Plating bonds to chain; can't be washed off! Components stay cleaner, last longer, and run quieter. Extremely durable and outlasts all other chain lubes! Environmentally sensitive and saves money. To be applied sparingly unlike many other lubes. Classic Lite and Original Bicycle Chain Lube (BCL) differ only in their concentration. Lite BCL is less concentrated for easier application and optimum performance. We recommend the Lite Bicycle Chain Lube for road bikes. You can confidently use Dumonde Tech's Bicycle Chain Lubes on all cables, pivots points, and seals. Safe on plastic, rubber and all seal materials. The product is designed to not harm your components. Eco-friendly and environmentally sensitive, our products are engineered to perform with minimal "carbon footprint" by not washing off in water, to use sparingly, lasts longer between applications, and your drive train lasts longer. Very good performer in extreme cold conditions.

Our Classic ORIGINAL chain lube is a liquid plastic and through polymerization forms long-lasting plating on all chain surfaces. - “Riding in” forms an extremely low-friction plating. - Plating bonds to chain; can’t be washed off! - Components stay cleaner, last longer, and run quieter. - Extremely durable, outlasts all other chain lubes! - Environmentally sensitive and saves money. - To be applied sparingly unlike many other lubes. Classic Lite and Original Bicycle Chain Lube (BCL) differ only in their concentration. Original BCL is more concentrated for exceptional durability under the most challenging conditions. The two formulas are compatible and may be used interchangeably. We recommend the Original Bicycle Chain Lube for mountain bikes, cyclo-cross, and more extreme conditions. You can confidently use Dumonde Tech’s Bicycle Chain Lube on all cables, pivots points, and seals. Safe on plastic, rubber, all seal materials. The product is designed to not harm your components. Eco-friendly and environmentally sensitive, our products are engineered to perform with minimal “carbon footprint” by not washing off in water, to use sparingly, lasts longer between applications, and your drive train lasts longer. Very good performer in the extreme cold conditions..

Dumonde Tech’s Classic Liquid Grease is a high-performance replacement for traditional viscosity grease. Liquid Grease reduces the coefficient of friction through Polymer Technology. Liquid Grease polymerizes and bonds to the surface providing extremely low drag. Liquid Grease is attracted to heat to provide lubrication at critical locations. Highly recommended for steel and ceramic cartridge bearing. Eliminates drag that grease-packed bearing experience for a drag-free bearing, even in the freezing temperatures. Ideal for suspension fork legs, full suspension pivots, wheel bearings, and roller bearing. A proven application for spoke nipple and rim interface. Can be used as a chain lube for very extreme muddy conditions of mountain bike and cyclocross.

KMC's digital ChainChecker is the most accurate tool for checking your chain’s elongation. - Measures up to 2.5mm elongation - Fits all chains including 11 speed - Handy electronic device - Stainless hardened metal body

- Pro bleed kit for mineral oil brakes - Includes 2 syringes/2 M4 fittings, bleed block, Torx tool, crowfoot

An alignment gauge is essential for diagnosing and repairing bent or misaligned derailleur hangers, often the source of shifting problems. The DAG-3 features an all-new design, engineered and built to be light, accurate, and versatile. The sliding indicator can measure derailleur hanger alignment against bicycle rims of any size and rotates out of the way to clear seat stays, racks, and other obstacles, allowing 360-degree measurement. The long, precision-extruded aluminum body is built to exacting tolerances and provides ample leverage for making adjustments. - Compatible with 16" to 29"+ wheels (ISO/ETRTO rim sizes from 317 to 630+) - Replaceable M10 threaded tip - Low-profile head fits low clearance thru-axle derailleur hangers and Shimano Direct Mount hangers - Length: 16.5" (420mm) - Weight: 22.75 oz. (645g)

No more need to hold wheels between your knees, balance on a bench top or ask for help. The WH-1 Wheel Holder firmly holds thru axle and quick release wheels at three convenient positions. It’s like having a strong helper to hold wheels during cleaning, tire and tube work, hub work, cassette work, and tubeless installation. The WH-1 can be bolted or clamped directly to a bench or installed in a bench vise. Uses and Features: - Quick and easy access to hold virtually any wheel to perfectly position your work for a variety of tasks including but not limited to: - Wheel building -Cassette removal and installation - Tire and tube removal and installation - Tubeless tire work - General cleaning - Hub work - Holds wheel at vertical, 35 degrees from vertical, and horizontal positions - Accepts 12, 15, and 20mm thru axles and 5mm skewers - E-Nickel finish for durability

3/8" drive Zyklop bit sockets. - Bit sockets with retaining function for hexagon socket screws - The holding function holds screws securely on the tool - Take-it-easy tool finder: color coding by size - Knurling on lower end for more grip when used manually - Chrome vanadium steel, matte chrome-plated - 1x 8740 B HF 1 Zyklop bit socket set with holding function - 3/8" drive, 7 pieces - 7x 8740 B HF Zyklop bit socket with holding function, 3/8" drive: 4.0x107.0, 5.0x107.0, 6.0x107.0, 7.0x100.0, 8.0x100.0, 9.0x100.0, 10.0x100.0 - 1x Hook-and-Loop Fastener Strip 120, 70 x 50mm

High-quality combination ratchet wrench set by Wera. The new generation of combination ratchet wrenches, suitable for hexagon bolt heads or nuts. Comes with a holding function, thanks to the metal plate in the jaw, which reduces the risk of dropping nuts and bolts. The replaceable metal plate in the jaw secures nuts and bolts with its extra-hard teeth and limits the danger of slipping. - Practical holding function thanks to the metal plate in the jaw - Limit stop prevents any slipping - The double-hex geometry reduces the risk of slipping - Return angle of only 30 degrees - "Take-it-easy" tool finder: color coding by size

Designed and built specifically for a wide variety of bicycle Torx compatible work, the THT-1 is a set of eight common sizes of professional quality T-Handle star-shaped wrenches built for speed, efficiency, leverage and a perfect fit. Soon to become your favorite Torx compatible set, the THT-1 includes a handy tool holder that mounts to any vertical surface, including pegboard and solid surfaces (fasteners not included). - Carefully selected combination of Chrome Vanadium and S-2 tool steels - T6, T8, T10, T15, T20, T25, T30 and T40 Torx compatible wrenches included - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Sliding T-handle creates increased leverage and multiple access positions - Tool holder is included with the set and mounts to any wall, bench or tool box, perfectly positioning each wrench for easy access and storage

Bushings and spacer designed for use with Pedro's Headset and Bearing Press. - Includes ten precision-machined bushings in 6 sizes covering installation of all road, mountain, and BMX press-fit bottom brackets cups and bearings, plus a BB Bushing Spacer for enhanced flexibility, speed, and alignment - Bushings and spacer designed for use with Pedro's Headset & Bearing Press ensuring precise and accurate installation. Inner diameter of 18.4mm (14mm for 19-37 and 19-41) - EVA foam packaging insert keeps the bushings protected, organized, and ready for use

Incredibly compact set arrangement with many tools in a minimum of space. A completely new ratchet set feeling with unique textile boxes that are very robust and durable. They can be positioned upright for tidy storage on the workshop shelf. Additional surface protection due to textile outer material. Low weight and volume for simpler mobility. - Convenient direction change thanks to switchover lever - Extremely slim ratchet with long lever - Return angle of only 5 degrees - Take-it-easy tool finder: color coding by size

3/8" drive Zyklop bit sockets. - 8-piece bit socket set on a robust textile belt, 3/8 - Bit-sockets with all the advantages of the Wera bit technology - Bit-sockets with holding function for screws/bolts - Smooth Twist to Unlock mechanism for a secure fit and simple removal of the sockets - Suitable for attachment to a wall, shelf, tool trolley and to the Wera 2go System - 1x Belt B 2 Zyklop In-Hex-Plus bit socket set with holding function, 3/8" drive, 8 pieces - 8x 8740 B HF Zyklop bit socket with holding function, 3/8" drive - 3.0x35.0, 4.0x35.0, 5.0x35.0, 6.0x35.0, 7.0x38.5, 8.0x38.5, 9.0x38.5, 10.0x38.5 - 1x Socket rail B (textile belt), 8 location, unloaded, 45 x 275 mm - 1x Hook-and-Loop Fastener Strips 30, 200 x 30 mm

Torq Stick Torque Wrech - Pull & rotate to select your target torque value - Audible signal: Torque wrench clicks when preset torque is reached - Storage pen integrated with tool holder snaps to hold the Ratchet Stick together for riding or storage - Turn the ratchet wheel to tighten or loosen mounting bolt - 3, 4, 5 Allen bits, T20, T25 Torx bits included - Material: aluminum and engineering grade polymer body, hardened steel ratchet, S2 hardened steel bits

8-Bit System is a multi-fonction tools that regroup all potential needs in the field -01 and -02 : 8-Bit Multi-tool plier offer 17 functions: - Master link plier - Valve core wrench; Torx T10 and T25; flat head #3.5; Phillips #2; and hex 2, 2.5, 3, 4, 5,6 and 8mm bits - Includes a tool for clearing tubeless valve stems and a spoke wrench - Storage for one set of quick links -03 : 8-Bit Chainbreaker + Utility Knife Multi-Tool add-on - Chain breaker - L key has a 3mm hex forked tire plug insert - Utility knife - Attach to 8-bit plier with magnets and short pins - Items for internal storage are sold separately -04 : 8-Bit Tire Lever + Rim Dent Remover add-on - Tire lever - Aluminum rim dent remover is designed for use with alloy rims - Attach to 8-bit plier with magnets and short pins -05 : Complete Kit Including Plier and both add-on

Being a "shade tree mechanic" doesn't mean you should lean your bike against a tree. You paid hard-earned money for your family's bike collection and we've got a budget-conscious, yet feature-loaded bike repair stand that's perfect for the home bike mechanic. The price-point leading 360-degree rotating clamp can position your bike optimally for any work you're planning. Plus, the Recreational Stand leverages a 52-inch (132cm) wide base with rubber-coated end caps for fantastic stability on any surface. And when the service day is done, it folds into a space-saving unit for storage. Add a Tool Tray, Bottle Opener and a Pro Truing Stand for the complete at-home bike shop. - Seatpost clamp features Spinner Knob for quick closure and precision clamping pressure - 360-degree rotating clamp design provides easy access to any part of your bicycle - Fixed clamp height at 55-inch (139cm) - Rubber-coated clamp secures and protects expensive components and beautifully painted frames - Clamp opening up to 1.9-inch (4.8cm) accommodates even the largest diameter frame tubes - Powder-coated steel construction is corrosion resistant and incredibly durable - Stiff 52-inch (132cm) base and rubber-coated end caps create ultimate stability even on uneven surfaces - Total load capacity of 60lbs (27.2kg) accommodates service on most road, mountain bikes, fitness bikes, and electric bikes - Portable and compact construction creates a remarkably small folded footprint of 10 x 4 x 55-inches (25.4 x 10.2 x 139.7cm) - Optional Travel Bag available - At 13.8lbs (6.3kg), moving in and out of storage is no problem - No assembly required - 3-year Warranty

The Pack Hanger Alignment Tool allows quick adjustments to be made to the derailleur hanger while on the trail or in the workshop. Alignment fixes are quick and intuitive, as you only need to adjust the hanger handle until it is parallel with the indicator rod. By using the bike's axle for reference, you don't need to be concerned with the wheel for making adjustments to the hanger. This new tool has included options for QR and thru axle. And for simple and durable storage, the components of this tool also nest inside of the handle. - Quick, easy deployment at the trailhead or workshop with all components ready to go inside the handle. - Tightening knob employs a clever rock-to-lock thread engagement that saves time while installing and removing. - Alignment is made by a simple, intuitive process of lining up the handle to the indicator rod. No turning the wheel or dodging spokes required. - Works on 12mm thru axle and 5mm quick release bikes

- Square 3/8-inch reversible ratchet drive features unique push-through design for superior durability and reliability. - Designed for left-hand or right-hand thread 10-80Nm torque settings required for bottom brackets, cassette lockrings, and other high torque components. - Quickly set torque using a micrometer-style dial and simple locking mechanism. - Includes 3/8-inch square to 1/2-inch square adapter and 3/8-inch square to 1/4-inch hex adapter. Torque wrenches have become an essential bicycle tool. The increase in carbon fiber bikes and components have driven the need. While carbon fiber allows for more optimal design and provides a far higher strength to weight ratio compared to steel and aluminum, it is also more susceptible to crushing and cracking when improperly set up. Pedro's Grande Torque Wrench features a 350mm length designed for left-hand or right-hand thread 10-80Nm torque settings required for bottom brackets, cassette lockrings, and other high torque components. A unique push-through, reversible, 3/8-inch ratchet drive delivers superior durability and reliability. This click-type torque wrench makes an audible click when desired torque is reached and is quickly set in 0.5Nm increments using a micrometer-style dial and simple locking mechanism. The Grande Torque Wrench also features heat-treated steel construction for accuracy, strength, and reliability, and includes a 3/8-inch square to 1/2-inch square adapter and a 3/8-inch square to 1/4-inch hex adapter. Accurate to within +/- 4 percent. Backed by a Pedro's two year warranty.

For easy and safe servicing of your RockShox rear shock, look no further than the RockShox Rear Shock Clamp Tool. Use with model-specific clamp tips for servicing the damper of your rear shock. - For rear shock damper servicing - Ratcheting pistol grip action for easy operation - Use with shock-specific clamp tips

- Incredibly compact torque wrench with adjustable range from 2-10Nm - Reversible ratcheting head - Includes a 5 bit storage compartment that attaches to the wrench for storage - Also includes the following hex bits 3 4 5 and T20 and T25 Torx bits - P

Lightweight Aluminum and ABS plastic construction Quick release levers for easy folding Sturdy, no-tip tri-leg design Removable tool tray Quick clamp with cam-lock

- Incredible durability - New and improved anti-wear additives to improve component life. - Contains synthetic polymers for long distance-performance - Provides the ultimate performance in both wet & damp or dry & dusty conditions - Petroleum-free formula for eco protection - Ideal for road cycling and cyclocross

The chain tool is fundamental to bicycle mechanics. As drivetrains push the envelope, however, chain tools must evolve to keep pace. The Pedro's Tutto Chain Tool II has done just that. The Tutto II blends ergonomic, organic design and noticeable industrial stature with patented innovations like the Fit Dial and RPG and novel additions like the Peening Bit for Campagnolo® 11, 12, and 13-speed chain assembly, ergonomic set-back handle design, and Guide Pin Shear Slot. These unique features and a new replaceable bridge make the Tutto II the most versatile chain tool available, compatible with almost any chain from single speed to 13-speed and beyond including SRAM® Flattop chains. Lastly, the Tutto II was designed with season after season of professional service in mind featuring heat-treated tool steel construction for superior strength and lasting performance, and simple disassembly to make servicing and part replacement easy. Backed by Pedro's lifetime warranty. Key Features: Fit Dial: The Fit Dial is used to adapt your Tutto Chain Tool to almost any modern chain. The Fit Dial wheel has 4 anvil features. Inspecting closely you will find that each anvil feature differs from the other in height or style. Each anvil is marked with a series of dots denoting which setting is in use. A Fit Dial usage guide is laser etched on the Tutto handle for easy reference. Each indexed setting is easily selected by rotating the Fit Dial. RPG: The RPG, or Retracting Pin Guide, is a multi-purpose feature found only on Tutto Chain Tools and Pro Chain Tools. First, the spring loaded RPG supports the pin up to the face of the chain eliminating broken pins and ensuring perfect alignment every time. Second, for chains with guide pins like Shimano® or Campagnolo®, the RPG encloses the guide pin to prevent loss, bending or breakage, and ensures perfect installation. Third, the RPG accepts the Peening Bit required for installation of Campagnolo® 11, 12, and 13-speed chains. Peening Bit: The Peening Bit is handily stored in the base of the Tutto handle. This bit is used for Campagnolo® 11, 12. and 13-speed chain installation which requires a peening operation during installation of the chain rivet. The bit is easily removed from the handle and fits onto the end of the RPG allowing installation of Campagnolo® 11, 12, and 13-speed chains. Guide Pin Shear Slot: For chains that use a guide pin for installation, the Guide Pin Shear Slot provides an integrated tool to remove the guide section from installation pins. After pressing the master pin into the chain, simply insert the guide section into the shear slot and rotate the tool up or down. - Premium shop quality chain tool with patented Fit Dial and RPG for superior functionality and reliability. - Replaceable bridge ensures compatibility with all current and future chains from single to 13-speed and beyond including SRAM® Flattop chains. Visit pedros.com/chainfit for compatibility info. - Includes a premium EVA foam insert for storage.

After years of research and testing, Park Tool's built what they consider the best shop clamp made. It’s smooth, versatile and built to stand up to everyday shop use. • #100-3D fits the following repair stands: PRS-2, PRS-2 OS, PRS-2 OS-1, PRS-2 OS-2, PRS-3, PRS-3 OS, PRS-3 OS-1, PRS-3 OS-2, PRS-3.2-1, PRS-3.2-2, PRS-4, PRS-4 OS, PRS-4 OS-1, PRS-4OS-2, PRS-4W and PRS-33 • #100-5D fits PCS-4, PRS-7, some models of PRS-5 (with composite top tubes), and PCS-1 models manufacturer post 2002. (Note: Inspect top tube below lever for an embossed "939") • #100-25D fits PRS-25, PCS-10, PCS-11, PCS-12 (and PRS-15 with 1951-15 Adaptor Stud) • Grips nearly any tube from 7/8” to 3” (23–76mm), including aero tubes • Micro-adjustability allows perfect clamping pressure every time and prevents damage to thin-walled tubes • Long travel cam handle allows quick entry, adjustment and exit • Versatile: It grips nearly any tube including aero shaped tubing and seat posts 7/8” to 3” (23mm-76mm). Its narrow clamping jaws (2.7”/7cm) are designed to clamp securely yet fit into tight areas or on short seat posts. • Durable, replaceable jaw covers • Soft Touch saddle cradle provides a perfect spot to temporarily rest a bike by its saddle • Built to last: Powder coated, precision machined, die-cast aluminum main body parts and high quality small parts • Fast operation: Cam-actuated adjustment system for quick entry, adjustment and exit, plus handy “spinner” handle helps speed large size range adjustments

Park Tool offers premium-quality reamers for nearly any bicycle standard. The reamers below are designed to quickly, accurately, and precisely ream headtubes when used with Park's Head Tube Reamer (HTR), ensuring a perfect headset fit and prfoessional-quality bicycle build. Choose the correct reamer for your application using the following information: - 751.2: This reamer is sized to 30.1mm. This allows a 0.1mm interference fit when pressing the 30.2mm headset of the “Euro” one-inch standard. - 754.2: This reamer is sized to 33.9mm. The allows a 0.1mm interference fit when pressing the 34.0mm headset of the 1-1/8" standard. - 788: This reamer is sized to 43.95mm. It reams head tubes to accept “internal” headset cups with 44.05 - 44.10mm O.D. (1-1/8 ZS standard). It is used with Park Tool's 690-XL Facing Cutter and 750 Centering Cone. - 738: This reamer is sized to 52.1mm. It is used to ream head tubes using the 1-1/2" integrated headset standard. It is used with Park Tool's 690-XL Facing Cutter and 750.2 Centering Cone Adapter. - 789: This reamer is sized to 55.95mm. It is used to ream head tubes to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). It is used with Park Tool's 690-XXL Facing Cutter and #750 Centering Cone Adaptor. - 799: This reamer is sized to 47mm. It is used for cutting the lower head tube on frames using an IS47 bearing for a 1-1/4" integrated headset. It cuts a 45-degree bearing set shoulder.