■ Crankset for 1 of Gravel/Adventure Compos "GRX810" series. ■Optimal gear for complex terrain and riding styles. ■Hollow Tech 2 crank construction ■ Supports front single and rear 11 speeds. Bottom brackets sold separately. ■ Compatible chain: HG-EV 11-speed, HG-X11 ■ Number of teeth configuration: 40T ■ PCD: 110mm ■ Chain line: 50.1mm ■ Q factor: 151mm ■ Axle type: 24mm ■ Recommended BB: SM-BBR60/SM-BB72■ Compatible BB Siel width: 68mm, 70mm ■ mm ■ Crank length: 170 72.5, 6.9 inches (175 mm); Reference Weight: 23.2 oz (644 g).