1.Robust Mechanism - Heavy-duty 5/16" steel push rod provides a 12:1 thrust ratio for heavy/high viscosity materials. Silent squeeze mechanism prevents squeaking when the trigger is activated. Dual plate thrust mechanism ensures sufficient pressure. 2.Heavy-Duty Construction - The high-quality, heavy-duty steel barrel is designed for standard 10 oz. caulk. The riveted and reinforced creadle style frame provides security and stability to the barrel. Revolving frame allows the barrel of the caulk gun to rotate, making maintaining orientation effortless when caulking around corners. 3.Ergonomic Design - Ergonomically designed handles coated in rubber provide a comfortable grip for all day use. The built-in poker makes starting the caulking simple and hassle . 4.Versatile - Adjustable dripless mechanism pulls back the push rod ensuring caulk does not continue to flow. The adjustable dripless control allows the feature to be dialed in upon each use.