The Funnel King Manual Grease Gun is a 14-ounce push-action grease gun made of heavy-duty steel with a zinc plated finish. It has a rigid 18-inch flex hose and comes with a hydraulic coupler fitting. This manual grease gun can generate up to 5,000 PSI of pressure and has a follower spring inside to push grease out. It works with standard grease cartridges and bulk fill. The Funnel King grease gun is designed for automotive, industrial, and farm applications. With proper care it provides reliable grease delivery.