electric bike kit: 1 Type :brushless hub motor; 2 Rated volts and power:24v/36v/48v/180w-500w; 3 Use: electric bicycle,electric tricycle,electric scooter and so on; 4Lower noise and safer collocation with drum brake; 5 Wheel size :16",18",speed can be custom-made ; 6Throttle:twistintelligentspeedthrottle; 7 Alloybrakehandle; 8.Charger:AC220v60Hz,chargingtime:6-8hours; More info,welcome to us!