Made of High Temp 4-ply Reinforced Silicone Meet and exceed SAEJ20 industry standards, ideal for heavy duty pressure connections and provides excellent resistance for high temperature applications Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system UV and ozone resistant Silicone hose is NOT compatible with fuel or oil; Inside Diameter: 3/4 > 1-1/4