Small, versatile gun allows user to let pipe come out of front or top. Handy for all greasing applications. Barrel takes 3 oz grease cartridges or can be suction loaded. Includes push lock plunger, die cast T-handle that locks in place for loading, 5-1/2" straight grease pipe standard-duty coupler, and 3 oz cartridge of LubriMatic multipurpose No. 2 lithium grease. Develops up to 4500 psi (pounds per square inch).