Campagnolo Centaur Tapered Bottom BracketThis Campagnolo Centaur Tapered Bottom Bracket contains three sealed cartridge style bearings for ultimate durability; two on the drive side and one on the non-drive side. It features an incredibly strong CrMo axle that has been hollowed out to keep weight to minimum. The unique square taper spindle is only compatible with Campagnolo chainsets.Features: Cup Material: 7000 series Aluminium alloy Spindle Material: 16mm, heat-treated , hollow CrMo Unique taper is not interchangeable with Shimano Fits all years and models of Daytona, Racing Triple, Centaur, Veloce and Mirage chainsets Also fits 1993 and later Athena and pre-1995 Record and Chorus chainsetsBuy Campagnolo Components from Chain Reaction Cycles, the World's Largest Online Bike Store.