XT M771 10-Speed 11t Cog for 11-32t Cassette

XTR M980 10-Speed 11t Cog for 11-34/36t Cassette

Campy 11-Speed 14-Tooth Cog

Dura-Ace 9000 11-Speed 13t 2rd position Cassette Cog

Dura-Ace CS-7800, Ultegra CS-6600, 10-Speed 12T Cog

16T Cog for use with Shimano or SRAM GC Cogs

Ultegra 6800 11-Speed 12t 1st position Cassette Cog

Ultegra CS6500 11t with Built-in Spacer

XTR M9000 11-Speed 11t cog for 11-40t Cassette

Campy 11-Speed 13-Tooth Cog

Campy 11-Speed 16,17,18 Cogs for 11-23 Cassette

Campy 11-Speed 16,17,19 Cogs for 11-25 Cassette

Campy 11-Speed 17,18,19 Cog for 12-25 Cassette

Campy 11-Speed 19,21,23 Cogs for 11-23 Cassette

Campy 11-Speed 23,25,27Cogs for 12-27 Cassette

Centaur Ultra-Drive 17A 10 speed Cog

Campy 11 speed 23,26,29 Ti Cogs for 12-29 Cassette

Campy 11-Speed 12-Tooth First Position Cog

Campy 11-Speed 21,23,25 Cogs for 12-25 Cassette

Campy 11-Speed 23,25,27 Ti Cogs for 12-27 Cassette

Dura-Ace 9000 11-Speed 12t 1st position Cassette Cog

11-Speed 11T D Cog for 11-27/11-29 Cassette

11-Speed 12 Tooth D Cog for 11-27 and 11-29 Cassettes

11-Speed 13 Tooth D Cog for 11-27 and 11-29 Cassettes