Shimano Dura-Ace CS-7900, Ultegra CS-6700 10-Speed 12t 1st Position Cog, B Fit for 105 CS-5800

Shimano Dura-Ace CS-7900, Ultegra CS-6700 10-Speed 12t 1st Position Cog, B Fit for 105 CS-5800 - 12t Cog is backordered and will ship as soon as it is back in stock.