Upgr8 Universal 4-Ply High Performance Straight Reducer Coupler Silicone Hose (1.25"(32MM) to 1.5"(38MM), Red) Inner Diameter: 1.25''(32mm) to 1.5"(38mm). Length: 3.0''(76mm). 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.