Trident Marine 4" ID 45-Degree EPDM Black Rubber Molded Wet Exhaust Elbow w/4 T-Bolt Clamps [TRL-445-S/S]4" ID 45 Degree EPDM Black Rubber Molded Wet Exhaust Elbow with 4 T Bolt Clamps Trident EPDM marine wet exhaust connections are molded of high temperature black EPDM rubber with a smooth bore and cover; except elbows of 6 I. D. or bigger have molded reinforcing ribs on the outside. Features: Four stainless steel clamps are included This elbow has excellent resistance to ozone, salt water, diesel fumes and splashes, cold, heat, and aging Exceeds (SAE