Originally wanted to buy these, tested them out 1 time and realized that the build quality was sub par at best. The plates were rattling pieces of cheap plastic and seemed like they might fall off. You must return to the specialized weight stand to pick up or drop off weight/plates.

Then I switched to the POWERBLOCK Elites. These things are solid as hell. You dont need to return to a stand to pick up or drop off weights, which is a huge benefit. I went from doing a 180 pound benchpress to 40lb curls and then back to a 100 shoulder press without even having to from the bench I was at.

Bottom line: BUY POWERBLOCKS