Meet the toughest grease guns around. Plews/LubriMatic grease guns are constructed of heavy duty steel and finished in rugged baked enamel or tough zinc plate. Ideal for household and do-it-yourself automotive use. Uses standard 14 oz. cartridge. Develops up to 6,000 psi. Delivers 1 oz of grease/40 strokes.Individually boxed. 5 per master.