Shimano Tiagra FC-4700 Cranksets FEATURES: Crankset with integrated 24mm axle decreases weight and improves rigidity Aluminum construction with anodized finish 43.5mm chain line, 110mm BCD, 150 Q-factor SPECS: Number of Chainrings: Double Chainline/Hub Compatibility: 130 Hubs , 135/142 Road Disc Hubs > 415 mm Chainstay Spindle Interface Type: Shimano Hollowtech II Chainring BCD: 110 Shimano Asymmetric Color: Gray Crank Intended Use: Road Pedal Spindle: 9/16" Drivetrain Speeds: 10 BB Included: No