Trident Blue Corra-sil Corrugated Silicone Marine Wet Exhaust & Water Coolant Hose is the ultimate in flexible exhaust quality. Extra long service life and excellent long length bendability. Exceeds SAE J2006-R2, and ABYC, & NMMA P-1 exhaust standards. Built with extra thick wall, glossy blue corrugated cover, smooth red tube, wire helix between 2 ply polyester reinforcement and 350°F (177°C) Max. Perfect for long, bent wet exhaust (genset and engine) run and premium raw water and coolant hose runs. See Marine Wet Exhaust Systems Catalog.**