Plews Standard Duty Pistol Grease Gun is equipped with 3.5 inch grease pipe and coupler, while it develops up to 5,000 pound per square inch. This grease gun is a hand-operated pump that can be loaded with grease and is used for lubricating the Grease fittings on a vehicle. It helps in applying lubricant to a specific point, usually on a grease fitting. This grease gun is convenient and easy to use with one hand. The loading system is 2-way which is cartridge or bulk load, whichever preferable by the user.