Features: The working pressure of the heavy-duty grease gun is 7000 PSI, making it suitable for a wide range of lubrication applications, including mechanical/automotive and marine equipment/light and heavy-duty machinery. The Heavy Duty Pistol Grease Gun is the premium grease gun in the market, offering dependability and the best ergonomics. Made from chrome plated steel,The 18inch length makes it more flexible to operate. Interchange Between Flex Hose & Rigid Extension. Suitable for most vehicles, tractors, RVs, automobiles, PTO axles, steering cylinders, universal joints, suspension tie rods, ball joints, lawn mowers, chassis and driveshafts. Detailed design; Double row air holes, high-pressure piston, extended reinforced spring, flexible oil suction rod, etc. The piston has an electroplated surface. Anti rust, low friction, preventing grease from overflowing. Specifications: Material:chrome plated steel Specification: 400CC Working pressure:7000 PSI Packing list: 1XGrease Gun 1XSpring Flex Hose 2XExtension Rigid Pipe 1 Sharp Type Nozzle 1 Reinforced Coupler