Kiran 200W 24V Bicycle Bike Booster 160*120*80mm Durable For Instruction: Click HereSpecifications:Color:black+greenMaterials:aluminum alloy+plasticMotor Voltage: 24VApplicable Battery: 24V lithium batteryFit For: Electric Mountain Bike BicycleSize: 160x120x80mm/6.3x4.7x3inMax Speed: 25 KM/H Features:-Easy to carry and easy to disassemble. Disassemble and install in one minute.-This product is partially made of lightweight aluminum alloy material and features small size, light weight and compact structure.-The friction wheel design is more reasonable, and it does not damage the tire and can fully utilize the idle part of the tire to transmit power.Package Included:1 x Booster2 x Accessories(This product does not have a battery)Note:-Please allow a bit error due to manual measurement. please make sure you do not mind before you bid.-The color may have difference as the picture display, please be careful before you place the KR-1521039