Trident Rubber 101 Sanitation Hose, premium rubber, 1-1/2" ID, black. Sold by the 50' coil. Premium sanitation hose for all head and holding tank connections. Extra thick tube and cover specially compounded for maximum resistance to odor permeation and winterizing anti-freeze. Helical wire between 2-ply reinforcement. Excellent flexibility bend radius. Longest odor-free performance on the market. Self-draining installations still recommended. Not for potable water.