Description Features: High quality: Made of durable steel and nylon strap for rugged use. Easy to install: With the complete coupling arm and coupling plug, easy to install without any other tools required. Wide use: The trailer adapter can be compatible with universal wheels and e-bikes. Useful: Works with quickly detachable or slotted axel wheels. Does not work with disc brakes. Specifications: Color: Black Material: Stainless Steel Package Size: 21cm x 5cm x 3cm Package Weight: 330g Package Included: 1Pc x Bike Connector .