For Audi S4/A6 Turbo Intercooler Silicon Hose Piping Kit Set (Red) - B5 C5 TYP 8D Full 5mm Thickness 4-Ply Nylon for Strong Reinforcement Burst Pressure: 290 PSI Size Tolerance: +/- 0.5mm Working Pressure: 45 PSI to 130 PSI Withstands Operating Temperatures from -65 F to 350 F Degree Fahrenheit