Fits 16-notch tool fittings with a major diameter (outside of notches) of 44-45mm and a minor diameter (inside of notches) of 42.7mmCompatible with: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 othersBafang BBSH, BBS02 mid-drive motor lockrings and Center lock disc brake rotor lockrings3/8` drive fittingExternal BB SocketBlue16-Notch44-45mmBBT-69.43/8`UPC/EAN/GTIN: 763477001658