Campagnolo Centaur Cartridge Bottom Bracket, ISO Square Taper, axle length: 111mm, English (BSA 1.370"x24 tpi) or Italian (ITA 36x24 tpi) thread. Fits Centaur and Veloce double cranks with Square Taper (up to 2006). Material: hollow steel axle, aluminium bearing shells. Weight: 233g. Campagnolo item no. BB5-CE1G (BSA) / BB5-CE1I (ITA).