Dr Schutz thick carpet pad floor protector for tubular sled base chairs. Each ChairFixx glide has a carpet pad bottom that clips into place with a durable acrylic attachment that can be used with or without the included pin. Intended for use on tubular style sled base chairs, the Scratchnomore Chairfixx glide is the most durable chair leg floor protector for these types of chairs. Easy to install, no tools required. All Dr Schutz Scratchnomore chair leg floor protectors are commercial, heavy-duty quality. Five sizes to choose from to fit most tubular metal sled base chairs.