Shields Super PVC Sanitation Hose is smooth off-white PVC with a vinyl helix. It contains an anti-fungus/bacterial agent to inhibit odor causing growth. It is resistant to mild chemicals, saltwater, and permeation. This hose is primarily used for toilet to holding tank (self-draining lines) and holding tank pump out. It has a five-year limited warranty. Do not use ethylene glycol-based anti-freeze in hose. CAUTION - Do not use for potable water. Sierra Part #116-144-1006. Contains anti-fungus/bacterial agent For use with self-draining toilet lines | Shields 1" Super PVC Sanitation Hose, 50'L