HPS (HTSVH159-BLUE) 5/8" x 1' Silicone Vacuum Hose Temperature Range: - 65 degree Fahrenheit to + 350 degree Fahrenheit (177 degree Celsius) Made of high temperature premium grade silicone rubber Heavy wall design gives it the ability to handle extreme pressure; Ultra flexible and Excellent tensile strength Hose Inside Diameter: 5/8 inch (15.9 millimeter); Color: Blue Silicone hose is compatible with water or anti-freeze such as coolant; Silicone hose is not compatible with fuel or oil