Use for engine intake and wet exhaust connections where bends or long lengths are required. Marine flex Water Exhaust Series 250 Hose with Wire, 3" x 2' Meets SAE J2006 Type R2. Black synthetic rubber tube and cover, reinforced with wire helix imbedded between plies of HD synthetic cord. Also good for bilge pump intake/discharge, scupper lines, toilet intake/discharge, and holding tank vent and pump out.