Top of the line grease gun designed for heavy industrial applications Variable half-stroke built-in for use in confined areas 10,000 psi / 690 BAR Air bleeder valve Bulk filler fitting 12" flexible hose and 6" steel extension with professional 4-jaw coupler Built tough with aluminum die-cast head Large rolled threads for fast and easy 3-way loading Follower plate locks to help loading For use with 14 oz. grease cartridge or bulk grease 28 Strokes Per Ounce