For windshield washer and vacuum lines. Made of high density polyethylene. Barbed ends allow quick connection. Recommended uses: multi-purpose tubing. Working temperatures: tubing dependent. Applications include vacuum, water, & anti-freeze lines. AGS brass and steel fittings are comprised of Tube Nuts, Unions (Couplers), Adapters, Elbows, Tees, Bushings, Connectors, Grease, etc… AGS fittings are held to the strictest standards to perform flawlessly in their intended applications. Fittings are offered in a variety of packaging options, including: retail clam-shells, bulk boxed, and plastic tray assortments.