Park Tool bottom bracket tools for installation and removal of 16 notch bottom brackets.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 cupsThreaded bottom bracket cups from Campagnolo , Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, Wheels, Fulcrum, and othersCenter lock disc brake rotor lockringsBafang BBSH, BBS02 mid-drive motor lockrings Park Tool BBT 16 Notch Bottom Bracket Tool Bottom Bracket Tool UPC: 763477001658