I wanted to like this accessory unfortunately it is not a good piece of equipment due to design. This should have the same locking mechanism as the 3x3 rocker arms where it can be In a forward and back position only otherwise its unstable, unusable and a mess to try and load weight on. As soon as I put a 25 pound plate on the arm started to shift to slide the weight off. I regret throwing away the box before trying this item out now I'm stuck with paperweights. About the only exercise I can see this being usable for at this point is belt squats. Very unhappy customer.