Uses standard 14 oz grease cartridge or can be bulk filled. Rugged electro-static epoxy coated finish resists corrosion. Deep knurling for non-slip grip. Heavy duty steel barrel for long life. Machined steel head protects hardened steel plunger. V-handle posi-lock follower rod for sure grip and easy filling in any position. Ideal for home, farm, maintenance and shop use. Complete with 6 inch rigid pipe extension and coupler. Delivers 1 gm/stroke or 1 oz/28 strokes. Produces up to 6000 PSI.