General description Automatic Pop Up Waste without Overflow is designed for basins without overflow. This chrome-plated waste valve features a push-open mechanism that allows for easy operation with just a finger press. Technical specifications Material: Brass construction with chrome plating Standard installation dimension: 1 ¼ inches Sealing ring: Very high density and continuous Installation Easy to install; simply unscrew, clean, and screw back in place Ensure the sink hole is a regular round shape with a smooth and flat edge Note: If the basin hole is crooked or frosted, it may lead to leaks after installation