500W electric bike conversion Kit, fit for 20"-29" wheel and 100 mm front dropout spacing, with a speed of 35km/h, make your bicycle an electric power moped, brushless hub motor for noiseless running, to fully enjoy the pleasure of riding. LED or LCD display for you to choose. LCD for Data Display - Shows battery condition, speed, distance, PAS, trip time and error codes for troubleshooting, also cruise and assist promotion function can be turned on by operating the LCD display. Pedal Assist Sensor - To sense your pedal cadence and accordingly adjust motor turning rate, get power assistant without using throttle, great for a long-distance journey, avoid wrist pain from keep pressing Durable Frame - Aluminum alloy frame for durability and stability. Convenient to Use - Twist Throttle makes speed control as a breeze Hand brakes shut off the motor automatically to save energy and improve safety.Environmental Protection - Powered by battery, without carbon dioxide emissions. 1x 48V 500W Front/ Rear Wheel Hub Motor 1x Electric Controller 1x Controller Box 2x Brake lever 1x Thumb/ Full Twist / Half Twist 1x LCD/LED Display 1x Pedal Assist Sensor. 1x Waterproof Main Cable 1x Cable Tie 1x Manual.