The Lumax Lever-Action Grease Gun strikes a balance between cost and capabilities! This grease gun was designed for the low frequency user who still needs the output and performance of a professional grease gun. Develops up to 10,000 psi (690 bar) allowing the user to push through most blocked or restricted fittings. This gun includes a contoured lever, which reduces user effort while increasing pressure output. It also includes an air bleeder valve designed to help the user easily remove air pockets that can stop or diminish pump output. The unique follower rod lock system simplifies the grease cartridge replacement process and prevents accidental grease discharge while loading the new refill cartridge.