Crankset consisting of Rotor Vegast crank arms, length 172.5 mm (Rotor Aldhu crank arms, length 175 mm, also available), Rotor 30 mm axle (bottom bracket cups also available if needed). Rotor INspider power meter measuring watts, cadence, balance, and other metrics, rechargeable via cable and charger included. Magene 50-34 chainrings compatible with 10-11-12 speed groupsets.