I needed to replace a chair in my solid oak dining set, and these were the closest I could find.  They are extremely light in weight compared to my other chairs. I've had to tighten the bolts already after a month of use (primarily used by 2 small children).  They slide on ceramic tile, no not sure if the grout joints caused the loosening. Based on other reviews, I almost ordered 4 sets to replace all of my chairs.  After seeing the quality, I'm glad I didn't. We now plan on replacing our dining set, so will just have these to get us through until we find what we want.