Describe: 1. Adopt high pressure resistant outer braided inflatable tube, pressure resistance up to 300PSI. 2. The quick connection nozzle is made of pure copper, which has high structural durability, beautiful and shiny, and no stains. 3.The air pump extension hose is an extension of the tire valve, making the tire inflation process easier. 4.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. 5.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. 6.The air pump extension tube is made of durable materials, resistant to wear and deformation, and the hose is not easy to break. 7.The main application scope of the pneumatic chuck: tire inflation of cars, bicycles and motorcycles. Instructions: 1. Connect the external thread to the air outlet of the air pump 2. Connect the quick-connecting pneumatic chuck to the tire mouth Specifications: Pressure: 300PSI. Material: high pressure gas tube, metal Colour: Black Length: 20cm/7.86in 30cm/11.8in Package Included: 1pcs* Inflator Pump Extension Hose20cm/30cm Notes: The colors may be a little difference for the different monitor display. Please allow minor deviation due to manual measurement.