All MetalRustproof & Durable: The popup drain is made of brass and SUS304 stainless steel without any plastic parts. The highquality finish resists scratches, tarnish, corrosion, and rust, so the drain is durable enough to serve for 10 years or more.Normal SizeFits Most of Sinks: The diameter of the popup cap is 2.4" (62mm). Overall length of the sink drain is 8.5" (215mm). The diameter of the string nut is 1.3" (32mm).Sturdy Enough to Use for A Long Time: Our sink drain is made of highquality and solid metal materials, which resist cracking and explosion and keep sturdy and durable. The drainpipe body is thickened to 2mm. Tightly screwing the drain can prevent leaks.Thick GasketsResist Leak: The highquality thickened silicone gaskets are ideal for sealing water and resisting oxidation. With the three pieces of silicone seal gaskets, bathroom sink drain strainer effectively prevents water leaks.Standard 1 3/4" (45mm) Drainhole: Fits sink holes with a diameter between 1.6" (41mm)1.9"