Package List: 1 x Motor Wheel 1 x Controller 1 x Shifter 2 x Brake Handle 1 x Magnetic Assist 1 x Controller Bag 2 x Instruction Manual 1 x Wrapping Film 6 x Ribbon 1 x Binding Post (Yellow Box) 1 × LCD display Note: 1. Disc Brake Is Not Included. Please Make Sure The Axle Size Is Compatible With Your Bike Before Placing The Order. Battery Tips: The Battery Is Not Included In The Package. The System Requires a 48 Volt Electrokinetic Cell Battery Li, Lead-Acid, Nimh Battery Etc. With a Nominal Capacity Of Not Less Than 17 Ah. Be Sure To Use Lead-Acid Batteries Or Lithium Batteries Of The Corresponding Voltage.