1、PREMIUM MATERIALS: Skull shaped shell are constructed from plastic and an internal copper design, which ensures resistance to erosion, particularly in cold and damp regions, durability, and strength. 2、SURFACE PROCESS: Tire valve cover is die cast once and is plated to prevent metal oxidation and rust. This increases its resistance to erosion and wear, improving its texture and gloss. 3、UNIQUE DESIGN: The caps feature a distinctive skull shaped design, easier to grasp and tighten, adding a splash of vibrant color and a touch of personal style to your vehicle. 4、SEALING PERFORMANCE: Our tyre valve caps have excellent sealing performance through precise engineering design and premium material manufacturing, effectively preventing gas leakage and ensuring reliable operation of tyres. 5、WIDE COMPATIBILITY: Skull style tire stem valve caps are universally compatible with most vehicles, including cars, bikes, SUVs, trucks, and other motorized devices. Item Type: Skull Tire Valve Caps Material: ABS+Metal Installation Diameter: Approx. 7mm / 0.28in Universal Fitment: Cars, trucks, bicycles, motorcycles 4 x Tire Valve Caps