Park Tool BBT-147-12

Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 50–53 mm and a minor diameter (inside of notches) of 48.2 mm, including: BBInfinite T47, Chris King ThreadFit 30, Chris King ThreadFit T47, Chris King ThreadFit T47 24x, Chris King ThreadFit T47 30, Hambini T47, Rotor T47 External 30 mm, Rotor BBright, BB30, BB386EVO, and PF30 thread-together 57.5 mm (2.264'') outer diameter at point of engagement Internal clearance: 42 mm (1.654'') depth (from tool face) x 30.44 mm (1.198'') diameter Attributes Bottom Bracket Type 48mm/ 12 notch