I was not impressed with this bookcase as the hardware did not work very well and my husband even agreed since he had to add multiple screws for it to be held together. Perhaps they included the wrong size hardware, however the instructions were quite comical.

The locks did not lock (tighten) like they should to the screw once turned and we followed the directions to a T. We have assembled furniture similar to this using the same hardware and have never had this issue with it locking. Also I’m not sure what the purpose is for the center piece underneath It doesn’t touch the ground.

Please see pics shown as those were taken prior to the additional screws being added. 

Overall a little bummed with quality for the price for this bookcase.