The marine-grade 3" x 6-1/4 ft Rubber Corrugated Exhaust Hose contains a black synthetic rubber tube and cover. This product is strengthened with a double wire helix embedded between plies of synthetic cord and is abrasion-resistant. It is resistant to exhaust ozone, fumes, antifreeze, salt water, and mild chemicals. This hose is used for wet exhaust connections with engine intake, significant bends, and scupper lines. The temperature ranges from -20 degreeF to 200 degreeF continuous, 250 degreeF intermittent. The hose now has double the ozone resistance required by SAEJ2006 and fulfills SAE J2006 Type R2 standards. Key Features: Carefully crafted to fit your specific boating demands Engineered to high standards It features a high-grade design that provides an extended lifespan Made with premium materials Guarantees proper performance