1,Skull Tire Valve Caps: Die cast copper molding, surface plated to improve wear resistance, texture, and glossiness. Rust proof and premium materials for long lasting use. 2,Unique Design: Skull shape for easy grab and tighten. Personalize your vehicle with colorful accents. Make your car, truck, bike, or motorcycle stand out in a crowd. 3,Airtight Seal: Solid designed with good sealing, ensure no air leakage, prevent air from escaping from a slightly leaking due to vibrations by acting as a cushion between the cap and the valve stem. 4,Universal Fitment: Compatible with most cars, bikes, SUVs, trucks, and motorcycles. Easy to install with a 7mm diameter. Keep your vehicle stylish and safe on the road. 5,Premium Materials: Made of ABS and metal for a sturdy construction. Upgrade your vehicle's look with these skull themed tire valve caps. Enhance both style and function. Item Type: Tire Valve Caps Material: ABSandMetal Installation Diameter: Approx. 7mm or 0.28in Fitment: Fits for Cars, Trucks, Bicycles, Motorcycles, Bikes 4 x Skull Valve Stem Cap Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.