This storage box is the bomb!  Sturdy plastic, instructions with pictures, securely packaged.  It takes seconds to set up the storage bin, and I appreciated that each box (I ordered 6 sets of these) came with an  instructions page (even though after the first box you don't need to read it anymore). The storage boxes with just a click lock together when stacked.  I put the wheels on every box and this did not stop the locking of the stacked boxes.  My hobby room is now organized and looks good too.