Upgr8 Universal 4-Ply High Performance 90 Degree Elbow Reducer Coupler Silicone Hose (2.25"(57MM) to 2.5"(63MM), Blue) Inner Diameter: 2.25''(57mm) to 2.5"(63mm). Length: 9.0''(228mm). 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.