Quality tool for installing and removing Shimano and ISIS Drive splined 20-tooth bottom bracket cupsCan be used with a 3/8â drive torque wrench 3/8â ratchet driver, 32mm wrench, FRW-1 Freewheel Remover Wrench, or 1â wrenchBottom Bracket Socket22 NotchBBT-22UPC/EAN/GTIN: 763477000385