Features: The air pump extension hose is an extension of the tire valve, making the tire inflation process easier. The air pump extension tube can quickly connect and disconnect the tire nozzle, thus ensuring that the air pressure in the tire will not leak when the tire is inflated and disconnected. The inflatable chuck has high flexibility, it can be easily bent, and the threaded interface design is adopted, so there is no need to worry about it being easily loose or leaking. The air pump extension tube is made of durable materials, resistant to wear and deformation, and the hose is not easy to break. The main application scope of the pneumatic chuck: tire inflation of cars, bicycles and motorcycles. Package Includes: 1x Air Pump Extension Tube Specifications: Material:Rubber Copper Length:Approx.10cm/3.93inches Length:Approx.20cm/7.87inches Length:Approx.40cm/15.74inches Length:Approx.60cm/23.62inches Color: Black Instructions: Connect the external thread to the outlet nozzle of the inflator, connect the quick connect inflation chuck to the tire mouth. note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.