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 an area larger than a flange, preventing damage to your material's surface. Easy to Use and Replace: The body bolt features a human engineering design, small in size, light in weight, and easy to carry, convenient to use. Push-in type U-nut spring clip allows for easy installation and quick replacement. More convenient than standard replacement bolts and clips, saving time and effort. WIDELY USED - Universal Fit for (08146-6162H) 370Z 350Z G35 G37 FX35 FX45 EX35 Truck Car. Widely used in car hoods, under engine covers, underbody trays/belly pans, fenders, trim panel clips, bumper clips, and splash guard mud flap retainers. SIZE - Washer diameter: 18mm / 0.66 inches. Bolt size: M6-1.0, 20mm long. Bolt total length: 22.5mm / 0.89 inches. Clips size: M6-1.0. Total length: 25.5mm / 1 inch. Width: 14mm / 0.55 inches. Tips: The product may be updated periodically. Due to different batches, the actual product may have slight differences or color variations, which do not affect use. Color: Golden Material: Metal Package Contents: 20 x Gold Body Bolts 20 x Gold U-nuts Clips Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3cm.