3.5 in. Hardwall Marine Exhaust Hose 12.5 ft. | Shields 116-250-3124 3 1/2 in. Marine Water / Exhaust Hose (with Wire) 12 1/2 ft. length Engine intake Wet Exhaust Connections - Use where bends or long lengths required Bilge pump intake/discharge Holding tank vent, pump out Black synthetic rubber tube and cover Reinforced with wire helix imbedded between plies of HD synthetic cord Resistant to: exhaust fumes, ozone, mild chemicals, antifreeze, salt water Abrasion resistant Odor permeation resistant Temperature range: -20F to +200F continuous, +250F intermittent 27/32 in. outside diameter