Upgr8 Universal 4-Ply High Performance Straight Coupler Silicone Hose 152MM Length (2.25"(57MM), Red) Inner Diameter: 2.25''(57mm). Length: 6.0''(152mm). Thickness: 5MM Min temperature: -60 C/-140 F. Max temperature: 220 C/428 F. work pressure: 0.3 to 0.9 MPA. Bursting Pressure: 2MPA. Size tolerance: +/- 0.5MM.