U-Shaped Roof Box Clamps with 8 Heavy-Duty Locking Nuts & 2 Straps, Universal U-Bolt Mounting Brackets, Roof Rack Mounting Accessories for Cars and Vans

【4-Piece Roof Box Mounting Kit】: The roof box mounting U-frames are made of high-quality galvanized steel and plastic. They are durable, break-resistant, and deformation-resistant, with a high load-bearing capacity and long service life. They can support the weight of the roof box, maintain stability, and ensure driving safety. 【Stable and Reliable】: Our 4-piece mounting U-frames ensure the roof box is held firmly in place, preventing any swaying or slipping while driving. A rubber sealing strip and a plastic backing plate increase friction and stability. This allows you to easily navigate potholes, hills, slopes, and highways. They fully protect your car from scratches and ensure the security of your luggage. 【Anti-Slip Protection】: They prevent the roof box from rubbing against the car body while driving. The U-frames feature anti-slip protection that prevents the roof box from rubbing against the supports, thus avoiding noise or scratches on the roof. They are equipped with soft rubber pads to protect both the roof box and the vehicle's surface. 【Easy Installation】: Installing the U-frames for roof boxes is simple and requires no special tools. They utilize a simple clamping mechanism. We provide sufficiently long straps to securely attach your roof box to the roof bars, allowing you to quickly install or remove it as needed. 【Complete Installation Accessories】: We provide all the necessary roof box mounting accessories, including 4 U-frames, 4 plastic plates, 4 rubber sealing strips, 8 reinforced locking brackets, 2 straps, and 1 set of sealing patches for the holes. These accessories provide everything you need for a secure and long-lasting installation. 【Universal Compatibility】: Our roof box attachment kit is compatible with most models on the market, with an internal width of 85 mm / 3.35 inches and a center thread spacing of 90 mm / 3.54 inches. Whether it's a sedan, SUV, or crossover, as long as the vehicle is equipped with roof bars, these supports are easy to install and use. All accessories are designed to be lightweight and compact, allowing for easy storage in the trunk for quick access.