Dura-Ace FC-7710 NJS 50T ChainringDura-Ace FC-7710 NJS 50T Chainring The chainring has made little to no mileage, and is therefore still in good condition. It is a 50T 144BCD chainring. 1 1/8'' Chain width. Weight: 95 gram.€ 75,00PriceQuantityAdd to cart