great for marine and industrial use, custom turbo or intercooler piping fabrication. Technical Specification: Product Type: Silicone Charge Air Cooler CAC Hose Cold Side. Temperature Range:- 65 deg. F to + 350 deg. F (177 deg. C). Reinforced Layer: 4-ply. Hose Inside Diameter: 5" (127mm). Hose Outside Diameter: 5.43" (138mm). Hose Length: 7". Number of Rings: 3. Wall Thickness: 4.5mm (+/- 0.5mm). UV and ozone resistant. Remark: Silicone hose is NOT compatible with fuel or oil.