" PERFECT INSTALLATION DIMENSIONS: Sink drain with overflow with 1 1/4" fitting fits all standard sinks and sinks! POP-UP: Thanks to the very simple pop-up click function, the drain of the washbasin The whole thing closes and opens in a fraction of a second! Built-in extra stable upgraded spring without premature fatigue. DURABLE MATERIAL: Chromed brass. Give your sink a new shine with the overflow drain! TOOL-FREE INSTALLATION: Installation is quick and easy in just a few steps, without any tools (in a sink with overflow). Murphy sinkSofa bed drain with overflow The pop-up sink drain is an overflow design that is suitable for sinks with an overflow hole. Simply gently push the pop-up lid to rock it up and down. This Click-Clack Spring Cap with Overflow for Bathroom Sink is suitable for the size of the hole in the bathroom sink.