Military quality: Made of solid plastic, very durable and well constructed, with anti slip stripes on the surface of the valve cover dome, its effortlessly to screw on by your fingers,install or remove easily when check your tire air pressure. Upgraded idea: These valve caps with Red rubber O ring gasket inside provides a nice tight moisture and air seal for your valve stems, seals dust out of the valve stem top, protects the valve from damage, rust, and corrosion, prevent tire from air leakage well, extend your valve stem life. Smart, ergonomic ridged grip: All tire dust cover has stripes around the top dome shape, make it easier to grab and tighten it with your fingers on the fly. Screw on tightly: You can screw on all the way to the bottom of the valve, no more worried if your tire caps would fall off like others, grip on your valve stem firmly, good for a long and tough drive. Wide Usage: Designed to fit for cars, SUV, carts, trailers bikes,motorcycles electric bikes and a bicycles, also perfectly fit for motorcycle tire with American schrader valves. car repair shops and cap replacement for home vehicle tire. 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. Sold by-YJL official store