The Campagnolo Centaur Square Taper Bottom Bracket fits all years and models of Daytona, Racing Triple, Centaur, Veloce and Mirage cranksets. It features three sealed cartridge style bearings and is an ideal bottom bracket for your Campagnolo equipped road bike. Weighing in at just 233 grams, this bottom bracket offers excellent stiffness for power transfer. The cups are machined from 7000 series aluminum alloy. This bottom bracket has a unique taper that is not interchangeable with Shimano. The alloy cups and bearings are similar to Chorus and Record models. The hollow cro-moly spindle is similar to the ACH bottom bracket spindle. Note: Fitted unit has marks on cups & has had a crank fitted. Cup Thread: BSA (1.37 x 24 tpi) or Italian (36mm x 24 tpi).