Campagnolo Exa-Drive 8-Speed Cassettes.Steel cogs with steel lockringFits all 8-speed hubs except 1996 Record Ti; does not fit 9- and 10-speed hubsItem SpecificationsColorNiCrWeight266gIntended UseRoadCassette SpacingCampagnolo 8Cassette Body TypeCampagnolo 8Cassette Cogs12,13,14,15,17,19,21,23Number of Speeds8Chain Compatibility3/32"Range12-23