Easton Double Road Shifting Chainring SetsHeavily machined for weight savings and excellent stiffnessExcellent shifting performance thanks to extensive optimized shift ramps and pinsUtilizes the versatility of the CINCH systemOptimized with 45mm chainline for modern road bike hub spacingDrivetrain Speeds: 11 speedTooth Count: choose; 39/53t, 36/52t, or 34/52tMaterial: EA90 aluminumBolt Circle Diameter: CINCH direct mount spider with 110mm asymmetrical BCDChainline: 45mmWeight: 227g. (34/50t); 243g. (36/52t); 255g. (39/53t)Color: Black