Allen wrench supplied is super soft metal and strips out easy. Make sure you have spares otherwise no way you can tighten sufficiently so it doesn't wobble significantly. Also, holes for screwing in the top cushion to the frame DO NOT line up. I had to bend the frame with a ratcheting strap to get the holes to line up. This bent one of the shorter sides along the top of the frame. Fine for me as it is hidden in a corner of the utility room but likely NOT OK for most buyers. Looks nice once it's put together but beware the distance between shelves isn't enough for most 8 hole or more boots. Good idea...poor execution.