Campagnolo Centaur 11 Speed CassetteThe Campagnolo Centaur 11 Speed Cassette has had its tooth profile completely redesigned to be in line with the rest of the Campagnolo 11-speed groupsets. The Centaur sprocket tooth design reduces the level of stress on the chain, which ascends more easily onto the higher diameter sprockets; even when shifting across increments of 3 or 4 gears at a time.Features: Material: Aluminium Finish: Nickel, Chrome Use: Road, Triathlon, Cyclocross, Time Trial Assembly: Single sprockets (grouped) Lockring Supplied: Yes Compatibility: All Campagnolo 11-speed Weight: 291g (11-29-tooth)Buy Campagnolo Components at Chain Reaction Cycles, the world's largest online cycling store