Trident 2524004: Trident 2524004 Flex Corrugated Hardwall Exhaust Hose, 4″ x 12.5’Corrugated Wet Exhaust and Water Marine Hose offers best performance and bend radius with its High Temp EPDM Rubber compounds. This enables it to handle higher temperatures, longer life and durability that its competition. Exceeds SAE J2006-R2, and ABYC & NMMA P-1 exhaust standards and Lloyd’s Registry Type Approved. Black High Temp EDPM Rubber 280F (138C) Max.The hose is sold by the Foot !!!