Sierra Silicone Double Hump Hose Coupler 6″ TheSilicone Double Hump Coupler 6″has a blue silicone cover with a smooth finish for easy clean up and fabric reinforced. The hose remains stableat elevated temperatures and providesangular and longitudinal vibration absorption in wet exhaust systems. Features: Shields couplers correct slight offsets in pipes Resistant to exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater Temperature ranges from -20F to 350F Meets SAEJ2006 Type R1 standards Specifications Length:14″ or 356mm I.D.:6″ or 152mm lbs:3