Park Tool Bottom Bracket Tool - BBT-19 The new BBT-19 is a heavy duty, shop quality tool for installing and removing 16-notch external bearing bottom bracket cups The BBT-19 can be used with either a 3/8" drive torque wrench, 3/8" ratchet driver, FRW-1 Freewheel Remover Wrench, or 1" wrench The BBT-19 is compatible with the following external bearing bottom bracket cups: Shimano Hollowtech II, Campagnolo Ulta-Torque and Power Torque, Race Face and FSA The BBT-19 is compatible with the following external bearing bottom bracket cups: SRAM, Truvativ, Chris King and Phil Wood outboard bearing