Pistol Grip Grease Gun with 4" Pipe and 4 Jaw Coupler with Ball Check Cartridge Capacity: 14 oz. Bulk Capacity: 16 oz. Stroke Delivery: .7 oz. / 40 strokes Maximum Pressure 5,000 PSI Features: CNC machined aluminum die cast head with bulk loader and air release valve, heavy duty steel barrel with non-slip surfaces, and a heavy duty pull handle with rubber grip.