4-piece roof box mounting kit: 4 U-shaped mounting brackets with an inner width of 85 mm + 4 silicone gaskets + 4 strap mounting plates + 8 locking nuts + 2 straps + 1 dot sticker. Premium materials: The roof box wall mount is made of galvanized steel, rubber, and plastic, which are wear-resistant and durable. The material is not easy to break or deform and has a long service life. Scratch-free: The roof box bracket is designed with sealing strips Made of rubber and a plastic back wall, it can protect your car from scratches and increase friction to improve overall stability and ensure the safety of your luggage. Easy to use: The roof box attachment is small, takes up little space, and can be easily stored in the room or in the car. They are practical and convenient for carrying multiple luggage when going out, and the installation is simple, convenient, and quick. Universal: The total size of the roof box attachment is 18cm x 9.8cm x 13.3cm, which is compatible with most cars on the