General-purpose mini grease gun is a compact tool box size grease gun perfect for hard-to-reach jobs. 5-1/2″ grease pipe and coupler. Ideal for DIY automotive, industrial, farm, RV, and marine applications. Includes zinc die-cast head cap and pistol grip for easy 1-hand operation. 2-way loading either 3 oz cartridge or bulk load. Allows for front or top pipe placement. Develops up to 3600 psi (pounds per square inch).