I have mixed reviews on these beds. I bought A LOT of them- the ones that are about 12" high, 8 feet by 4 feet, and the 2 foot high ones, 8 feet by 4 feet. If you want to actually see the beds put together go to YouTube, look up Hickory Hill Homestead (light green logo) and you'll see a recent video there. There are a TON of bolts and wingnuts. I believe I counted 72 in total for the shorter beds and even more for the taller ones. You can imagine how long these took to put together. There are 4 total pieces of metal on each long side, 2 pieces of metal on the short sides, 4 corner pieces to hook the sides together, and 3 middle supports.
One tip- do not put the bolts in on the bottom of the long sides because you have to add the supports, so it saves a tiny bit of time to wait until you put the supports in to add those bolts.
Customer service did not make me happy as one of the shorter beds was missing a long piece to the long side and instead I had an extra piece of the short side. At first they offered me $20 as a refund on a nearly $80 raised bed. No thanks... give me a side piece so I can finish the bed. They said they could not and would not send me a new one. They finally gave me a $45 refund. That still does not make me happy at all.