These are nice stools for the price.  Not the best directions. Assembly can be tricky if you don't keep track of the bolt and screw sizes. Don't use a long bolt in a short bolt hole. You can split the back of the frame. I did. My fault. One of four stools had a defective stretcher that Wayfair is replacing. Don't call the manufacturer on these as suggested. Wayfair handles complaints and parts.