The BBT-19.2 Bottom Bracket Tool from Park Tool is the right tool for bottom brackets with external bearing shells with 16 outer notches and an outer diameter of approx. 44 mm.

The new BBT-19 is a heavy duty, shop quality tool for installing and removing 16-notch external bearing bottom bracket cups. Made from investment cast steel, 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.