Trident Series 252 Corrugated Wet Exhaust/Water Hose 3-1/2" (By 50' Coil). For longer connections with substantial bends. Thick tube and cover with wire helix between 2 ply reinforcement. Exceptional flexibility and bend radius. Resists heat, ozone, exhaust fumes, panting and collapse. Sold by the foot, length or 50' coil.