PERFECT INSTALLATION DIMENSIONS: Basin drain with overflow with 1 1/4 connection fits all standard basins and sinks! POP-UP: Thanks to the very simple pop-up click function, the basin drain set closes and opens in a fraction of a second! Integrated extra stable improved spring without premature fatigue. DURABLE MATERIAL: Chrome-plated brass drain plug. Give your sink a new shine with the pop-up waste valve with overflow! TOOL-FREE INSTALLATION: Installation can be done quickly and easily in just a few steps, completely without tools (in a sink with an overflow). Click-Clack 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 cover to swing up and down. This click-clack spring-loaded stopper with overflow for bathroom sinks is suitable for the hole size of 3.1 cm. Please check the hole size of your sink before ordering. The spring-loaded sink drain slot is made of durable solid brass and the surface is chrome-plated to prevent corrosion. Thick silica gel gasket. Standard 3.1cm drain Overflow and pop-up design Solid brass body Chrome plated Easy installation Note: The data is manual measurement, please allow an error of 1-108cm, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.