Fits 16-notch bottom bracket tool fittings with a major diameter of 52-54mm and a minor diameter of 48.8mm, including:CeramicSpeed T47/86Enduro® T47 (30mm and DUB® spindles)Enduro® BB30/30a TorqTite (30mm and DUB® spindles)Kogel T47SRAM® T47 DUB®#White Industries T47White Industries PF30 Thread-Together