This is a plastic unit with 64 easy-sliding drawers (too easy, they tend to fall out and there no drawer stops). It has no back and there is a small hole in each corner for hanging on a wall. There are no dividers. It got 3 stars because it is as good or better than anything I found at Lowes, Home Depot, or ACE. I bought it because my 20-year old 60-drawer unit ran out of space. The old unit has a very sturdy metal frame with a metal back and good slots for hanging, stops on the plastic drawers, and came with 120 dividers and sticky labels. So while this unit is as good as anything in the stores, it is a very sad joke compared to what I could buy 20 years ago and therefore deserves no more than 2 or 3 stars.