Racing Silicone Hose Reducer Coupler Turbo Intercooler hoseAvailable ID:51mm/60mm/63mm/70mm/76mmDescription:Thickness :3ply 4.5mmWorking Temperature: -76°F (-60°C) to +500°F (+260°C)Working Pressure: 0.3 Mpa (43.5 PSI) to 0.9 Mpa (130.5 PSI)Bursting Pressure: 2 MpaSize Tolerance: +/- 0.5 mmNo instructions included, Professional installation is highly recommended.