I have two of these because I got hooked on those cute little planters for succulents and cactus. The first one I used the Allen wrench that comes with it. I have a love hate relationships with them and was glad the holes lined up. For the second one I ordered a set of wrenches for my cordless drill and there was far less drama putting it together. Did I mention the holes line up? That hardly ever happens. They use one size of screws and also send a couple extra which helps with the panic of dropping one.