This is not a Zip Wall System. If you want to erect a plastic dust containment system, buy the Zip Wall. It's far superior for that purpose. If you want a "3rd" had to hold sheetrock against a ceiling, or other heavy duty overhead, or even some horizontal tasks,this is the one to buy. You can exert considerable force with these and if you work alone, you'll find many uses for the 3rd hands. I agree the pins are a little hard to depress,  and the bag is a little too small, minor issues. However this is a heavy duty system that compliments the Zip Wall. In my opinion, buy them both, you won't be dissapointed.