I've bought several towers in the past, and have even assembled them from different parts of different towers; I was dumbfounded at the design for this one and its versatilityI use the bars for dips and they are so easily movable you can quickly go from one exercise to the next. I've hung rings from them, and the rack feature simply makes this the and only rack you'll need in your gym. squats, bench, you name it. all in oneI weigh 240 lbs and yes, there is some trembling going on when I do dips See full review