Product DIY Assembly ProcessDAY 1 https youtu be DwH2KfuXUQYDAY 2 https youtu be rdLAlQlATiADAY 3 https youtu be SqVAivrPE10Description 1 This product can be used to convert bicycles into electric vehicles 2 Material durable and easy to operate 3 This kit is suitable for installation on regular bicycles of 22 28 inches 4 This kit is not suitable for modification in special models and variable speed models Specification NameElectric Bike Conversion KitFit For20 28 inch ordinary bicycleRated Voltage24VRated Power250WFlywheel Teeth16Rated Speed3300 rpmReduction Ratio9 78 Note Without charger and battery case Due to the manual measurement there might be some error Package Included 1 X Motor1 X Controller1 X Motor Bracket1 X Light1 X Chain1 X Electric Door Lock1 X Flywheel1 X Extended Shaft2 X Connector1 X Charging Interface2 X Speed Control Switch2 X Handle5 X Plastic Insert10 X Copper Plug2 X Steel Plate4 X Screws4 X Ring