- Essential tool for your bike and car maintenance kit, compatible with both Schrader and Presta valves. Perfect for sharing with family and friends. - Valve Core Tool: This compact, multifunctional blue tool allows for easy installation and removal of Schrader and Presta valve cores, as well as Presta valve extensions using a 5mm wrench. Crafted from CNC machined anodized material for durability, it simplifies valve core adjustments on bicycles, cars, and other air-filled tires. - Bike Valve Adapter: Effortlessly convert a Presta valve to a Schrader valve for use with bicycle pumps or air compressors. Features a built-in rubber seal ring to ensure a leak-free connection. - Valve Core Specifications: Includes Presta valve type (French valve) and Schrader valve core (American valve). Made from nickel-plated copper, these valve cores effectively replace worn or leaking valves, providing a reliable seal and preventing air loss. Universally compatible with excellent air tightness, ensuring durability and safety. Use Scenarios: 1. Quickly fix a flat tire on your bicycle during a ride, ensuring you can get back on the road without hassle. 2. Maintain your car tires with ease, using this tool to replace worn valve cores and prevent air leaks. 3. Share the tool with friends and family during group bike rides, ensuring everyone can manage their tire pressures effectively.