Albion special deluxe manual 2 inch diameter steel barrel bulk caulking and sealant guns are designed to operate very smoothly by dispensing a wide variety of caulks and sealants. This highly popular heavy duty bulk caulk gun comes equipped with a 5/16 inch square rod that is driven by a pair of very hardened grip plates and generates 375 lbs of thrust with 120 psi of pressure. The full size epoxy coated durable handle makes it comfortable to dispense silicone, acrylics and polyurethane sealants quickly and easily. The Albion DL-45-T13 is designed for high volume sealant dispensing and accommodates 30 ounces of caulking and sealants. This tool also has a conical ejector for more efficient dispensing, a rotating steel barrel, a threaded steel front cap and a double set of oiled leather pistons that are stiffened by three steel washers for trustworthy loading and emission of your construction caulk that flows through its 1/2 inch round metal nozzle.