Gentilin Spiral Air Hose W/Fitting is perfect for connecting movable parts in wide range of applications The sprial air hose comes with an inner diameter of 6 mm & an outer diameter of 8 mm The hose extends up to a full 15 meters in length & features universal couplings at both end Air hose can work at a fixed operating pressure of 10 bar at 23 °C Gentilin air hose easily rolls back automatically