Park Tool BBT-9 Bottom Bracket Tool

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 cups
• Threaded bottom bracket cups from Campagnolo®, Chris King®, FSA® MegaExo®, Hope™, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum®, and others
• 16-notch disc brake rotor lockrings
• 16-notch Bafang® BBSH, BBS02 mid-drive motor lockrings

Fits 8-point tool fittings on Shimano® Hollowtech II® crank arm caps:

• Equivalent to Shimano® TL-FC16 or TL-FC18 tool