Product details:

Professional Special Deluxe manual drive bulk adhesive caulking gun with capacity up to 30 oz. Thrust: 375 lbf, Pressure: 120 psi. Heavy duty 5/16" square drive rod, driven by a pair of hardened steel grip plates. Rotating 30oz (18" long & 2" diameter) steel barrel for convenience and durability. Threaded steel front cap. Double set of oiled leather pistons stiffened by a trio of steel washers for reliable suction during loading and dispensing. Comfortable epoxy coated handle. This Albion Core Tool comes included with a 32-55 1/2" ID metal nozzle, which has excellent wear resistance when working on abrasive surfaces. Legendary Albion design and quality make this tool a leader in value.