The NS-UDBN-OF is an umbrella style vanity drain in a brushed nickel finish. Update your bathroom with an advanced pop-up drain assembly with overflow. Made to fit 1.5-inch sink drain holes on bathroom sinks with overflows. This fixture brings a fresh new look to your sink coordinating to your desired hardware. Snug fit is ensured by a rubber seal ring on each side. Designed for use with sinks that have an overflow.