Portable and easy to install, the trailer hitch features both vertical and horizontal mounting holes. No matter whether your bike trailer hitch has vertical or horizontal holes, this adapter fits perfectly. Enjoy family fun—equip both mom's and dad's bikes with an additional trailer hitch to tow the child trailer, so your kids can enjoy the ride. Bonus: 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 a nylon strap. 3. Hook adapter compatible with most bicycles and electric bicycles. 4. Works with quick release or flat axle wheels. Not suitable for disc brakes. 5. Includes complete hook arm and connector for tool-free installation. 6. Compatible with universal 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, fits 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 lighting and screen differences, slight color variations may occur. Actual product may vary slightly in appearance.