STORM MART Grenade and Unit One Personality Tire Valves Designs One Set 4PCS 100% brand new & high quality.KN-13-42-46(Skull Silver) Use on cars, trucks, bikes and motorcycles Includes four (4) individual machined aluminum valve stem caps Designed specifically for Tire Valves ,Closely link,Use safer Dustproof. Prevent gas mouth covered with clay or snow and corrosion will leak when the cheer .