About This Material: Made of ABS plastic & copper alloy, coated with polymer clay, embedded with rhinestones, valve stem covers fit vehicles of various colors and bring a beautiful outlook with shiny diamond. Waterproof and Dustproof Functions:All tire valve caps feature rubber O-rings seal and rotating thread structure inside to help prevent air leakage and to properly keep out dust, dirt, grime and road debris. Universal Size: Inside diameter is 0.28 Inch, high x wide is 0.79 inch x 0.55 inch. It is universal fits for standard American tire valves. Package Includes:4 pieces each package, You can install it without any extra tools, very easy and convenient. Sparkling Rhinestones Design: Our valve stem caps designed with Sparkling Rhinestones material, give your car a unique LUXURY look, also a nice gift for your families and friends. Overview Color : Purple Material : Acrylonitrile Butadiene Styrene, Copper, Plastic, Rubber Brand : alpmosn Fit Type : Universal Fit Vehicle Service Type : Motorbike, Passenger Car, SUV, Truck