• Bottom brackets have some of the highest torque specs of any component found on a bicycle
• Despite this, some bottom bracket cups feature tool fittings that allow mere millimeters of engagement, which can be a problem when attempting removal or installation
• Intorducing the Park Tool Bottom Bracket Tool Retaining System!
• Used in conjunction with nearly any Park Tool bottom bracket tool, the BBT-RS uses a spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage
• The BBT-RS can be configured for use with the vast majority of threaded and thread-together bottom bracket standards and features an M8 threaded rod and a double-sided adapter nut with M12 and M15 threads, allowing it to thread directly into any compatible cartridge bottom bracket
• The M15 adapter can also be used to install any of Park Tool's nine aluminium bottom bracket tools, all of which feature integrated threading for use with the BBT-RS

Compatible with the following bottom bracket styles:

• Threaded cup
• Thread-together
• Cartridge
• Cup-and-cone

Compatible with the following bottom bracket tools:

• BBT-27.3
• BBT-35-12
• BBT-35-36
• BBT-47-12
• BBT-47-16
• BBT-49.3
• BBT-59.3
• BBT-69.3
• BBT-69.4
• BBT-79.3
• Wrench-style bottom bracket tools with a handle (e.g. Park Tool BBT-9, BBT-29, HCW-4)
• Bottom bracket tools with external wrench flats (e.g. Park Tool BBT-19.2, BBT-22)

Tool specifications:

• Rod length: 175 mm (6.9")
• Rod threading: M8 x 1.0
• Adapter nut threading: M12 x 1.0 & M15 x 1.0
• Speed nut diameter: 38 mm (1.5")
• Washer diameter: 57 mm (2.25")