Campagnolo Veloce Ultra-Drive 10-Speed Cassettes. Lockring not includedSteelSplines only fit 9/10-speed hubs and wheelsCassettes do not include lockring (except 11t models)Item SpecificationsColorNiCrIntended UseRoadDrivetrain SpacingCampagnolo 10Cassette Body TypeCampagnolo 10Cassette Cogs12,13,14,15,16,17,19,21,23,25 Speeds10Chain CompatibilityCampagnolo 10