These LP gas hoses connect a portable propane cylinder to your RV permanent tank (equipped with the appropriate tee), thereby allowing an extended stay without having to drive to have your LP tank filled. Excess flow soft nose POL x 1/4" inverted male flare. Connects a propane cylinder to any device that has a 1/4” inverted female flare connection. One year warranty. This product comes in either a 60" hose or a 144" hose to meet your needs.