Waste Coupling for Wash Basin [Perfect Compacitility]--Our wash basin coupling fits 99% standard sink drain. Drain plug is suitable for sinks with drain hole larger than 3.2cm in diameter, Please be sure to measure the sink drain hole before purchase. [Stainless Steel Material]--Pop-up cap and anti-clogging frame made of integral molding zinc alloy with shiny chrome finish, bullet core made of premium brass, equipped with silicon seal-rings. It's anti-rust, reliable, and durable. You can trust it. [2 In 1 Feature]--Sink stopper or strainer? You need it all. Unlike other regular drain plugs, this innovative design cleverly combines 2 features water-seal and anti-clogging in 1. What a high-cost performance! Waste Coupling for Wash Basin