6.6" Length: The bike pump extension hose can increase the length by 6.6" in case the existing pump hose is too short to use Drop-in design double valve: the bicycle pump extension hose adopts double valve design, compatible with American valves, which is convenient and easy to inflate Durable material: the bicycle pump extension hose bike is made of nylon and copper materials, which are wear-resistant, corrosion-resistant and stable. Stable and reliable: The bicycle pump extension hose is compact and portable, helping you to inflate your tires quickly and safely Simple operation: the operation is simple and convenient, the bicycle pump extension hose can be used by connecting the pump and the nozzle Product Description Feature: 1. 6.6" Length: The bicycle pump extension hose can increase the length by 6.6" in case the existing pump hose is too short to use 2. Double valve design: The bicycle pump extension hose adopts double valve design, compatible with American valves, which is convenient and easy to inflate 3. Durable Material: The bicycle pump extension hose is made of nylon and copper materials, which are wear-resistant, corrosion-resistant and stable 4. Stable and Reliable: The bicycle pump extension hose is compact and portable, helping you inflate your tires quickly and safely 5. Simple operation: the operation is simple and convenient, the bicycle pump extension hose can be used by connecting the pump and the nozzle Specification: Item type : bicycle pump extension hose Product material: copper plating, nylon Compatible: American valve Description: Connect the pump and the nozzle for easy pumping