High-quality materials - The valve core remover and tire valve pressure reducer are made of copper and have a durable nickel-plated surface for corrosion-free use. Universal valve extension - The valve extension is compatible with all tires, this valve extension fits all passenger cars, trucks, RVs, motorcycles, trailers and RVs with standard tire valves. Unique hex head tip - Unique air valve stem extension, with a 3/8 inch (0.95 cm) hex nut on the top, for easy assembly with a socket wrench. Safe and reliable - With this valve cap extension, you can easily check the tire pressure. Increase the service life of the original tire valve screw, tire life, reduce fuel consumption and increase driving safety. Easy to Use- The installation of the valve extension adapter is very easy. All you need to do is tighten the current tire valve stem and no additional dust caps are required. The bottom of the brass bike truck valve extensions rotates freely for easy installation. The built-in core allows for inflation and deflation. Simply remove the existing valve cap and then activate this tire valve extension.