This is the best caulk gun made. Caulk guns are one of those tools that we usually buy a cheap version of because you don't use it that often BUT it makes a tremendous difference when you have a nice one. This gun has a steel-welded frame, rotating barrel, auto flow stop to disengage the plunger and control the rate at which material leaves the tubs. It also comes equipped with a pin for punture the tip of your tube! Great quality at a great price!