Features: 1. Flexible rubber air hose with metal chuck and thread fitting. 2. Explosion-proof, rustproof, resistant to pressure; quality tube with self-locking chuck. 3. Can be easily connected with the tire inflator to pump your bicycle, motorbike, car, etc.. Specifications: Material: zinc alloy + rubber Color: Black Length: 37cm/14.6" Screw thread: 1/4"(diameter is 12.5mm) Application: suitable for automobile tire pressure meter pipe fitting and inflatable pneumatic mouth joint Included: 1 xBicycle Pump Extension Hose