Trident Rubber Single Hump Coupler, blue silicone, 6" ID, for Wet Exhaust, no clamps. Provides the ultimate flexible connectors for Marine Wet Exhaust systems. Greater tolerance to heat, misalignment, vibration and engine movement. Saves cost in parts and labor plus saves space. 350 deg F maximum continuous operating temperature. Exceeds SAE-J2006-R3, NMMA P1 and ABYC standards.