FSA Pro Road chainring, 110BCDx52T - black Bolt Pattern: 5-BoltChain Compatibility: Shim/SRAM 10,Campagnolo 10,9-SpeedChainring BCD: 110mmChainring BCD: 110mmChainring Speeds: 10spChainring Speeds: 9/10spChainrings Material: 7075-T6 AluminumComponent Color: BlackPosition: OuterTooth: 52t