chainring / crank Shimano FRONT CHAINWHEEL, FC-M6100-1, DEORE, FOR REAR 12-SPEED, 2-PCS FC, 175MM, 30T part name: chainring / crankpart make model: ShimanoFRONT CHAINWHEEL, FC-M6100-1, DEORE, FOR REAR 12-SPEED, 2-PCS FC, 175MM, 30Tbike part approved: