Universal CompatibilityThis bathroom sink drain fits perfectly into any standard American bathroom sink with a drain hole inner diameter at 1.1~1.5 (28mm~38mm) ,which covers near 99% of your home drain holes that will give an exact match to your current style Thickened Hardware to LastThe bath tub stoppers adopted heavy duty stainless steel basket and bounce cover, and brass support bar, beautiful smooth polished finish to be both rust-resistant and durable while blending well with modern decor. The leak-proof rubber ring offers ensures a proper and tight fit No Installation RequiredThe pop up drain stopper for bathroom sink is easy to use and requires no installation. Just remove the old plunger and pop this new drain filter into the hole of your sink. It will stays shut as long as the size is correct. No more going under the sink messing with the drain rod Effectively Prevent CloggingOur pop-up sink drain plug designed with a built-in anti-clogging basket that can effectively prevent unwanted bits like hair getting into your plumbing. They also mean that you wont lose rings or other jewellery down your drain. Perfect for kitchen sink and bathroom shower tub