Trident Rubber 101 Sanitation Hose, premium rubber, 1-1/2" ID, black. Sold by the foot. 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.