Electric Motor Controller Go-Kart Scooter Bicycles Quad 800W 1000W 1800W 24V-48V. Can be used for mini bike quad and Go-Kart. Scooter Quad E-Bike, ATV mini motorbike. Unload current rated speed rated torque rated current power motor teeth type of chain. Note: It is different measure for every model, please check the size chart of every model before making a order.Depend on what you choose.