Unless you're a handyman with all the tools, or you're willing to spend the $90.00 for professional assembly, DO NOT BUY THESE CHAIRS!  Assembly is a flippin' nightmare! You will need at least a power drill, a wrench, and a ratchet set (and someone to help hold things at times). All they provide is a flimsy little Allen wench, so good luck with that. Some of the nuts and bolts are standard, some are metric - unbelievable! To assemble 1 chair it took approximately 4 hours. A lot of time spent scrambling looking for screws that I might have when 2 of the screws broke - and they only give you the exact number needed (how cheap!).  Don't believe the reviews saying that assembly isn't that bad. My husband is a builder, has the necessary tools, knows what he's doing and is just beside himself. The assembly is an absolute nightmare! Once together, the chair looks fine.