Description: 【High quality material】: The roof box accessories are made of high quality steel material, which is wear resistant and durable, not easy to break and deform, and has a long service life, which can be used for a long time. 【Practical Design】: The roof box mounting kit is practical and designed to protect your car from scratches and keep your luggage safe. 【Compact and Portable】: Roof Box U Bolt Clamps are small in size and light in weight, lightweight and portable, easy to store in the room or in the car, and an ideal car accessory. 【Easy to Install】: The car accessories are easy to install and easy to use, saving you energy and time. 【WIDE APPLICATION】: This roof box U bracket has an inner width of 85mm and a threaded center to centre width of 90mm. The diameter of the screw is 7mm, which can be used for most vehicles on the market. Size Chart: 18cmx9.8cmx13.3cm/7.09inchx3.86inchx5.24inch Package Includes: 1 Roof box mounting kit Note: Please allow slightly errors due to manual measurement and different monitors.