new improved electric bicycle motor Brushless Hub Motor 36V 750W for Rear Wheel: Voltage: 36V Power: 750W Motor Type: Brushless Gearless Hub Motor Motor Net Weight: 6.4kgs Motor Diameter: 240mm Hall Sensor Quantity: 3pcs Max. Speed: 350RPM (37km/h) Min. Fork Width Requirement: Min.13.5cm Corresponding Controller: 36V 750W Controller Available Speed Gear Quantity: Single Speed, 5-Speed, 6-Speed Disc Brake Available: Single Speed, 5-Speed, 6-Speed Available Wheel Size: 16", 18", 20", 24", 26", 700C, 28". electric bicycle conversion Kit ,electric bike, kit e-bike kit: Front or Rear Wheel (the whole wheel!) with different Watt Powerful Brushless Hub Motor (The wheel size comes with 16", 18", 20", 24", 26", 700C and 28". Please specify your wheel size and the Voltage you wanted when you order) Motor Controller Battery Charger 2 Brake pullers Twist Grip Throttle Battery Power Indicator 2ea. Handlebar Grips Pedelec Sensor Battery Connecting Harness Battery Carrying Bag PACKING: 16", 18", 20" Wheel: (Front Wheel Kit): 48cm X 48cm X 18cm 16", 18", 20" Wheel: (Rear Wheel Kit): 48cm X 48cm X 221cm 24" Wheel: (Front Wheel Kit): 60cm X 60cm X 18cm 24" Wheel: (Rear Wheel Kit): 60cm X 60cm X 22cm 26" Wheel: (Front Wheel Kit): 65cm X 65cm X 18cm 26" Wheel: (Rear Wheel Kit): 65cm X 65cm X 22cm 28",700C Wheel: (Front Wheel Kit): 71cm X 71cm X 18cm 28",700C Wheel: (Rear Wheel Kit): 71cm X 71cm X 22cm Safety Rules when Riding Scooters: Responsible riders do not duck in and out of traffic. Friends don't let friends ride scooters when drunk. Responsible riders do not ride at fast speeds on the sidewalk. Friends don't let inexperienced friends ride souped-up scooters. Responsible riders recognize that pedestrians always have the right-of-way. Responsible parents insure that their children wear proper safety gear when riding scooters.