Many years ago I purchased this product for my first file cabinet and loved it. Since I just purchased a second file cabinet (this time from Sam's), I would not have bought one without the other! This product arrived in a small box with four metal pieces, hardware to attach them with, and instructions. Following the picture diagram on the instructions was the easiest way to assemble it. Having wheels on the bottom of my file cabinet makes moving it, if I ever need to, much easier and more convenient since I can now do it myself, instead of waiting for a guy to get to it!