Albion heavy duty 2 inch diameter steel barrel caulking and sealant guns are proudly designed to operate very smoothly by dispensing a variety of construction sealants and caulk. The caulk gun's heavy gauge steel barrel rotates to provide multi-directional and steady caulk emission. The expoxy coated handle makes it comfortable to dispense silicone, acrylics and polyurethane sealants quickly and easily. Strong and durable oiled leather pistons that are stiffened by three steel washers and a conical ejector provide complete and efficient loading and dispensing of your caulk. The Albion DL-45-T13 special deluxe 20 ounce bulk caulking and sealant gun comes with a standard 1/2 inch round metal nozzle, a threaded steel front cap and a very durable 5/16 inch square piston rod with a t-pull.