Description: High quality: The skull-shaped housing is made from premium ABS and the copper interior design ensures that these tire valve nozzle covers are resistant to corrosion, especially for wet/cold areas. More durable, more sturdy. Technology: one die casting copper die. Surface electroplating, avoid metal oxidation, rust, improve corrosion resistance, wear resistance, texture and gloss. Special design: Skull shape design, easier to grip and tighten, more convenient, and personalize your vehicle in a small way, colorful, eye-catching, simple is best. Rubber Seal Ring - The skull stem cap has a rubber washer that helps create an air tight seal. This type of lid prevents dust and moisture from entering and also helps prevent air from escaping slightly. Escape from Schrader valve. In addition, the rubber seal prevents the cap from loosening and falling off due to vibration by acting as a buffer between the cap and the stem. . Our tire valve nozzle covers are generally suitable for most cars, bicycles, SUVs, trucks and other motor vehicles, etc. High quality materials ensure driving safety If you have any questions, please feel free to contact us and we will solve them immediately. Specifications: Product Name: Skull Valve Caps Material: ABS, copper Size: Inner diameter 7.5mm, outer diameter 19mm, height 17.5mm Package Included:4x Skull Valve Caps Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 0.1-2cm measuring deviation due to manual measurement. 629