Feature: 1. Durable and Lightweight: The aluminum alloy wheel drive is carefully processed to enhance the edge of the rim, making it lightweight and powerful. 2. Noise Free Operation: The bike motor has a powerful load bearing capacity and comfort, providing a noise free riding experience, allowing you to fully enjoy your ride. 3. Versatile Use: Suitable for DIY electric bikes, electric scooters, folding bikes, and more. Easy to maintain and install. 4. Powerful Performance: The 48V500W rear drive motor provides strong power and stable acceleration, making your biking experience more enjoyable. 5. Waterproof Design: The motor is equipped with a waterproof housing, ensuring its reliability and durability even in wet conditions. Specification: Item Type: Electric bike hub motor Material: Stainless steel, aluminium alloy Weight: Approx. 4050g / 142.9oz Rated Voltage: 48V Rated Power: 500W Position: Rear wheel Type: Gear motor Fork Open Gear(mm): About 142mm Waterproof: IP54 Applicable Wheel Size (inch): 16in, 20in, 24in, 26in, 27.5in, 28in, 29in, 700C, etc. Spoke Holes: 36 holes. Package List: 1 x Electric Bike Gear Motor