Portable metal structure tire mandrel inflatable adapter (5/16 x 32TPI) The air pump extension hose extends the tire valve nozzle, making the tire inflation process easier. The air pump extension tube allows quick connection and disconnection from the tire nozzle, helping prevent air pressure loss during inflation. Features an inflatable collet with threaded connection design to help prevent loosening or air leakage. Made of durable materials for wear resistance. High flexibility allows easy bending; hose is resistant to cracking or breaking. Main applications: bicycle, motorcycle, automobile, and other tire inflation uses. Instructions: Connect the external thread to the air pump’s exhaust nozzle and attach the quick-connect inflatable collet to the tire nozzle. Specifications: Material: High pressure tube, metal Color: As shown in pictures Pressure rating: 300 PSI Tire chuck outer diameter: 15.5 mm / 0.61 inch Connection thread: 5/16 x 32TPI Hose length options: 10 cm, 20 cm, 30 cm, 40 cm, 50 cm, 60 cm, 80 cm, 100 cm Connection type: Schrader valve Package includes: 1 x Air pump extension tube Note: Color may vary slightly due to differences in monitor resolution. Slight size variations may occur due to manual measurement.