These chairs are not for everyday use, large families, or sitting on for extended periods. The screws frequently have to be re-tightened, and we already had to order spare parts because the weld on a leg came undone. They are noisy, most of them squeak like crazy, so if you are sensitive to noise like I am, these will not work for you. The item description says they support up to 330 pounds, and nobody in our family weighs that much, so there is no reason the chairs should be failing like this after less than six months.