Upgr8 Universal 4-Ply High Performance Straight Hump Coupler Silicone Hose (2.0"(51MM), Black) Inner Diameter: 2.0''(51mm). 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.