MATERIALSThe bike trailer hitch is made of metal and nylon strap, which is strong and durable, not easy to damage, and can be used for a long time. The surface of the bicycle trailer is finished with black coating, which has the characteristics of anti-rust, anti-corrosion and strong wear resistance. This is also a reliable part. You can use it to replace worn or damaged parts. EASY INSTALLATIONThe bike trailer has a complete link arm and connector that easily attaches to the rear wheel assembly of the bike. The bike hitch can also be built into the trailers fixed pin and flexible connector. It can be installed without other tools, which is very convenient. BEST CHOICEBike hitch trailer is the best solution to release traction from bike hooks. By using bicycle trailers, the bicycles of both parents can be equipped with child trailers. Your child will enjoy bike rides. When your kid is tired of riding, you can tie them to the bike. SECURE D-LINK PIN EQUIPPEDThe bike trailer is equipped with a D-link pin, which is difficult to open. Even when installed, they are not easy to fall off. To ensure safety when driving. The drawbar connector is compatible with most bicycles, shopping carts, childrens vehicles, trailers, etc. Compatible with trailers and more, offering you maximum security PERFECT SIZEThe package includes 1 bike trailer, the size is 20 * 2, 8 cm. The diameter of the shaft connection hole: 1.1 cm. Substrate length: 5.5 cm. The diameter of the hole in the hook connected to the pendant: 0.6 cm. The installation diameter of the expansion shaft nut: 2.2 cm. Universal coupling adapter with spring coupling for bicycles and childrens vehicles.