Already assembled! See pics for measurements. Never been used. Like new because they have a few very small dents in a couple areas of the metal and one of the seat has a small flaw on the corner. These bar stools are made of high-strength metal. The Bar chair is made with a nice mold with a superb welding process to make it perfect. Each tall stool is with X-brace design under the seat that can bear 330 lbs, which provides extra support and stability. Durable bar stools can be stacked and to save storage space when you don't need them. Each industrial bar stool table is the same size, and the feet are open to the outside, which is a special design for storage.