Grease Coupler, Upgraded to 12000 PSI, Quick Release Grease Coupler, Compatible with All GreaseProduct descriptionLOCK AND SEALOur Saker Grease Couplers feature reinforced jaws and premium sealing gaskets to ensure long lasting stable performance and prevent leaks even at extreme pressures of 12,000 PSI.Rugged Quality - Made of high quality galvanized alloy steel, this high quality grease coupler can be used all day in or garage and is heavier and than any other grease coupler on the market.One-handed operation: The grease coupler with smooth retraction mechanism allows one-handed operation. No need to hold while refueling, locking the grease coupler allows you to operate the grease with both hands free.UNIQUE DESIGN - The improved grease coupler features a unique patented retraction mechanism that removes the inner seal and leaves the outer ring of the plug fully open, helping to locate zerk fittings in blind spots.Wide Application: The Saker Portable Grease Coupler fits all standard 1/8 grease guns, mini grease guns and also fits all DIN and SAE grease nipples, simply replace the existing grease with the existing grease coupler. This heavy-duty tool is ideal for use on large machinery at construction sites or auto repair shops. It is also an excellent lubrication tool for tractors and plows on the farm. Stump Puller, Stump Puller, Disc Harrow, Planter, etc.Dimensions: 9x1.8x2.5Included: 1pc Grease Coupler