4PCS Car Roof Box U-Bolt Clamps, 85mm Inner Width Vehicle Rooftop Cargo Carrier Rack Bolts with Lock Nuts & Straps, Van Roof Rack U-Shaped Mounting Fitting Kit, Universal Fit

Specifications: Material: galvanized steel, plastic Color: black Size: inner width: 85mm(3.35") thread center spacing: 98mm(3.8") Package Weight: 900g/1.98lbs Package Include: 4 x metal U-bolt clamps, 4 x plastic backplates, 4 x rubber gaskets, 8 x heavy lock nuts, 2 x bandages, 1 set x hole sealing stickers Features: -High Strength: The U-shaped bolt clamps are made of galvanized steel, while the nuts and back plates are crafted from high-quality plastic, ensuring durability and excellent strength performance. -Stable Fixing: Through the coordinated use of multiple components, this product ensures the roof box remains securely fixed after installation, minimizing movement during driving.

• Premium Material: This U-bolt clamp is made of galvanized steel material, which is sturdy, durable, and has high strength, and can maintain good use for a long time. In addition, its nuts and backplates are made of high-quality plastic material, which has excellent wear resistance, good toughness, and is not easily damaged. The rubber gasket is soft and can adhere to the surface of the vehicle during installation and use, effectively protecting the vehicle from scratches.
• Wide Application: The inner width of this roof box clamp is 85mm(3.35"), and the thread center spacing is 98mm(3.8"), the thread specification is M8, suitable for luggage tacks up to 40mm thick. It is suitable for most vehicle models, meeting the basic needs of most users for securing a roof box. Besides, the kit features a compact design that does not occupy excessive space, allowing it to be easily stored in the corner of a vehicle's trunk or in a storage bag, making it convenient to carry.
• Easy to Use: First, place the rubber gasket in the appropriate position on the vehicle roof, then place the roof box on top of the gasket and adjust its position. Next, thread the U-shaped bolts through the pre-drilled holes in the roof box, install the plastic backing plate at the corresponding position on the vehicle underside, and secure the bolts with heavy-duty locking nuts. Finally, reinforce with bandages.
• Roof Box Firm Fixing: This roof box U-bolt clamp effectively secures the roof box in place, keeping it stable during vehicle operation and preventing it from shaking or shifting. The rubber gasket and plastic backing plate enhance the contact tightness between the clamp and the roof/roof box, providing additional friction for a more secure hold. Even when facing different driving conditions such as mountain roads or slopes, the clamp still performs well in securing the roof box.
• What You Get: The package contains 4 x metal U-bolt clamps, 4 x plastic backplates, 4 x rubber gaskets, 8 x heavy lock nuts, 2 x bandages, 1 set x hole sealing stickers. The rubber gaskets improve connection fit, while the straps provide additional reinforcement. The components work together to provide stable support for the roof box, ensuring it is securely fastened after installation and meets daily usage requirements.