Carbon Steel With Zinc Finish: Made from high-quality material, these metal screws and U-clips are not easy to break. Strong rust resistance, not easy to oxidize and discolor. High strength and high hardness. Extend Engine Life: Undertray Cover Bolts prevent mud from splashing on the body when the car is running, effectively prolonging the life of the engine. The freely rotating but permanently attached washer distributes pressure over a area than a flange, preventing damage to your material's surface. Easy to Use and Replace: The body bolt with human engineering design, small in size, light in weight and easy to carry, convenient to use. Push-in type U-nut spring clip, easy installation and quick replacement. More convenient than in the local workshop replacement bolt and clip, saving time and effort. WIDELY USED - Universal Fit for (08146-6162H) 370Z 350Z G35 G37 FX35 FX45 EX35 Truck Car. Widely use in car hoods, Under Engine cover, Underbody Tray/Belly Pan, fenders, trim panel clips, bumper clips and splash guard Mud Flaps retainers. SIZE - Washer diameter: 18mm/0.66 inches. Bolt size is M6-1.0 20mm Long. Bolt total length is 22.5mm/0.89 inches. Clips size is M6-1.0. Total length is 25.5mm/1 inch. Width is 14mm/0.55 inches. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Golden Material:Metal Package Contents: 20 x Gold Body Bolts 20 x Gold U-nuts 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.