SHIMANO Ult-SL 6601 2x10sp chainring, 130BCD - 39t gry Bolt Pattern: 5-BoltChain Compatibility: Shim/SRAM 10Chainring BCD: 130mmChainring BCD: 130mmChainring Speeds: 2x10spChainrings Material: AluminumComponent Color: GrayComponent Color: Ice GreyPosition: InnerTooth: 39t