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
