Rivets are made of plastic material, suitable for car use. Car accessory, commonly used for side skirts, bumpers and other trim. Clips are suitable for firmly holding anything in a suitable diameter hole. Can be used on buses, trains, airplanes, trucks, cars. Push-in type, are made of plastic material. Product Name: Nut Fastener Screw Head Diameter: 20mm Stem Length: 14mm Fits into 10mm hole Part Number: 91505-TM8-003 Placement on Vehicle: Left, Right, Rear, Upper, Lower Material: Plastic Color: Black Package Contents: 300 clips Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.