Keep water out of your pedestal base while your seat is not in use with the durable pedestal base plug. The pedestal base plug provides a snug seal to the pedestal base when seat is out and not in use. Base plug fits all 1.75" - 1.77" bases. Easily slide the pin out for easy removal. Molded material won't rust or corrode. NOTE: please measure your existing pedestal base prior to purchasing to ensure a correct fit.