The rear weight pin is so close to the main post only 25lb Olympic style plates will fit and even with these they still rub the main post. 25lb per corner plus the bag base bag is not enough to keep it stable. Im going to add another 25lb at each corner for a total of 150lb base weight. The packaging leaves a lot to be desired, parts were loose, packing straps broke, parts were scratched from shifting around inside the box. The hand platforms for push ups are a joke, not stable at all, the pull up bar while nice, causes the frame to rock around. Overall if I had it to do again I would get the heavy bag speed bag combo. http://vintageluxcol.com/560198