The Shimano GRX FC-RX600 crankset offers optimum gearing for mixed terrains and riding styles. FEATURES : 2x10 speed crankset features wider gear range for long tours and unknown terrain 46.9mm chainline / 151mm Q-factor 2-piece crank construction SPECS : Number of Chainrings: Double Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay Spindle Interface Type: Shimano Hollowtech II Chainring BCD: 110 Shimano Asymmetric , 80 Crank Length (mm): 170 Crank Intended Use: Gravel Pedal Spindle: 9/16" Rings: 46/30 Drivetrain Speeds: 10 Weight: 819g BB Included: No