





Park Tool BBT-147-12
The Park Tool BBT-147-12 fits 12-notch threaded bottom brackets from BBInfinite, Chris King, and Hambini. Riders and mechanics install modern T47 and BB386 brackets with this ratchet-compatible tool.
- 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
Pairs well with

Park Tool BBT-147-12
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