Park Tool BBT-169

Fits 16-notch tool fittings with a major diameter (outside of notches) of 44–45 mm and a minor diameter (inside of notches) of 42.7 mm, including: Shimano BB80, BB5700, XT BB70, BB51, and previous external bearing threaded bottom bracket cups Threaded bottom bracket cups from Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, Wheels, Fulcrum, and others Center lock disc brake rotor lockrings Bafang BBSH, BBS02 mid-drive motor lockrings 50.04 mm (1.97'') 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 50mm/ 16 notch