Feature:1. Complete Tools: Roof mounting fitting kit includes a variety of installation tools, complete tools to meet your different needs.2. Durable Material: Roof mounting tool kit is made of stainless steel and plastic material, not easy to break and deform, durable.3. Small Size: The roof box bracket is small in size, light in weight and space saving, and can be placed indoors or in the car.4. Easy to Use: Universal roof mounting fitting kit is easy to install and remove, easy to use, no complicated procedures required.5. Wide Application: Roof mounting fitting kit is the right size for most models on the market, no need to worry about size.Specification:Item Type: Universal Roof Mounting Fitting KitProduct Material: Stainless Steel,Plastic,PolyesterHow to Use:installation steps:1. You can adjust the tensioner from the top or bottom.2. Insert the tube and lock directly with U screw and slats.3. Enter on the rubber pad.4. Install the spring washer and fasten with the nut.5. Fastening of the roof box by means of bayonet.Package List:4 x U Shaped Screw4 x Rubber Gasket4 x Backplane8 x Locknut2 x Bandage