- Package Includes: 4 flexible double valve extension tubes to meet all your inflation needs. - High-Quality Construction: Made from durable ABS, iron, and rubber materials, these extension tubes resist wear and ensure longevity. The meticulously polished surface and edges eliminate any sharp points, providing a safe user experience. - Size Specifications: Each tube measures 10 cm (3.9 inches) in total length, with a hose length of 3.7 cm (1.46 inches) and an inner thread diameter of 7 mm (0.28 inches) for versatile compatibility with various tire valves. - Simple Installation: Quickly attach the metal valve extender to your tire valve, then connect the hose to the tire air inlet using the valve extension tube. Inflation becomes straightforward and hassle-free. - Practical Applications: - Ideal for inflating bicycle tires, allowing you to maintain optimal pressure with ease. - Perfect for car enthusiasts managing tire pressure without the struggle of inaccessible valve stems. - Useful for RV and trailer owners who require efficient inflation solutions for larger tires. This product merges quality and convenience, ensuring that you have a reliable tool for all your inflation tasks.