Portable and easy to install, the trailer hitch features both vertical and horizontal holes, ensuring compatibility with your bike trailer hitch whether it is vertical or horizontal. Enjoy family fun with an additional trailer hitch—equip both mom's and dad's bikes to tow the child trailer, allowing your kids to enjoy the ride. An added benefit: when your kids are tired, you can attach the trailer to the front of your bike. Features: 1. Handy bike trailer hook for towing solution. 2. Made of strong and durable metal with nylon strap. 3. Hook adapter compatible with universal bicycles and electric bicycles. 4. Works with quick release or flat axle wheels. Not suitable for disc brakes. 5. Complete hook arm and connector allow for easy installation without additional tools. 6. Compatible with most bikes and e-bikes. Note: Works with quick release or nut wheels. Not compatible with disc brakes. Material: Strong, durable, and secure steel. Compatibility: Multi-compatible bike mount, suitable for most bicycles. Size: 20 x 5 x 4 cm Package includes: 1 x Bike Trailer Coupler Note: Measurements are manually taken; please allow 1–60 cm variation. Due to differences in lighting and screen display, color may vary slightly. Actual product may differ slightly in appearance.