Feature 1UNIVERSAL FITMENT: U bolt clamp kit suitable for most cars on the market, compatible with a variety of roof boxes, cargo racks, and top luggage carriers, meeting different needs. 2DEPENDABLE FIXATION: Unique design ensures stable and secure fixation of goods during transport, reducing the risk of shaking and sliding, ensuring safe driving. 3PREMIUM MATERIAL: Made of high strength stainless steel, featuring excellent durability and strength, ensuring stability and reliability in various weather conditions. 4VERSATILE APPLICATION: Inner width of 85 mm/3.35in and outer width of 98 mm/3.8in, suitable for luggage racks up to approx. 40 mm/1.57in thick, providing a wide range of compatibility. 5SECURE INSTALLATION: Accurate mounting size. Designed to securely fasten luggage boxes and racks to the roof of the vehicle, enhancing safety and stability during transportation.Item Type: Roof Box U Bolt Clamp KitMaterial: ABS, MetalSize: Approx. 85mm / 3.35in (inner width), 98mm / 3.8in (outer width), can accommodate luggage racks up to Approx. 40mm / 1.57in thickFitment: Suitable for most cars .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Roof Box U Bolt Clamp Kit(23PCS)