Portable metal structure tire mandrel inflatable adapter (5/16 x32TPI) 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 and disconnection. Inflatable collet with threaded connection design helps prevent loosening or leakage. Air pump extension tube made of durable material with wear resistance. High flexibility allows easy bending; hose is resistant to breaking. Main application: bicycle, motorcycle, automobile, and similar tire inflation uses. Instructions: Connect the external thread to the 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 inches) Connection thread: 5/16 x 32 TPI 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: Slight color variation may occur due to different screen resolutions. Size measurements may vary slightly due to manual measurement methods.