Upgr8 Universal 4mm/6mm/8mm/12mm Inner Diameter High Performance Silicone Vacuum Hose Kit (Red) Package Includes: 4MM(ID) X 82''(Length). 6MM(ID) X 52''(Length). 8MM(ID) X 52''(Length). 12MM(ID) X 52''(Length). Min temperature: -60 C/-140 F. Max temperature: 220 C/428 F. work pressure: 0.3 to 0.9 MPA. Wall Thickness: 3MM. Bursting Pressure: 2MPA.