This item is designed for sinks that do not have an overflow, if you are looking for a drain for sinks that do have an overflow, choose model AB9056 Solid brass construction coated with a Polished Chrome finish Mushroom pop up drain, allows you to open and close the drain by simply pressing down on the mushroom top. Suitable for sinks with a drain diameter between 1 3/8" - 1 7/8" Sleek modern design matches well with most modern faucets. Superior finish is corrosion & rust resistant.