Campagnolo Cassette Lockrings
0mm Steel Lockring for 12-16t first cog, Campagnolo Cassettes.Campagnolo Cassette Lockrings Fits 2000 and newer Campagnolo wheels Fits all Fulcrum wheels Fits 1999 Record/Chorus hubs and all Campy hubs 2000-newer 27.0mm Steel Lockring for 11t first cog, Campagnolo Cassettes Campagnolo 12-Speed Cassette Lockring for 11t 1st position cog Campagnolo/Fulcrum 27.0mm Aluminum Lockring for 11t First Cog, Campagnolo 11-speed Cassettes Only Campagnolo/Fulcrum 27.