Description: 1.These rivet fasteners are made of nylon material, suitable for car use. 2. Cars good accessory, commonly used for fitting side skirts, bumpers and other trim. 3. Rivet post pressure expands legs for fast and permanent fastening. 4. Used widely for car fender, bumper, door or other car surface. 5.These rivets are made of the plastic material, long-life use.