Look, it's wonky, the cylindrical upper bar didn't match the screws I got so I couldn't use it, the lower transversal bar screws popped their plastic cover so I had to screw them using tools, the included screws for the rack are of no use (buy some other screws)... and yet, it's super cheap, gets the job done and doesn't wobble once you populate it with your units. So, if you're rich, buy something better, but if you're poor as a rat like me, you'll be very happy this thing even exists at this price.