【FITS STANDARD DRAIN HOLE FROM 1 5/8" TO 1 29/32"】The vessel sink drain fits for the drain hole with a diameter of 1 5/8" to 1 29/32" (1.62 to 1.9 inches). WITHOUT overflow design, the drain is suitable for basins WITHOUT overflow hole. CAUTION! To avoid costly installation issues due to inadequate sizing, measure existing drain opening or consult sink manufacturer instructions first before placing an order.【ENGINEERED FOR EASY DRAINING】Push down drain function ensures complete drainage and offers sealing. Spring loaded push button does not require a lift rod. Simply push the drain cap down to close and to seal, push again to open and to drain water. You can turn the upper cap counter-clockwise to unscrew and remove it.【EASY TO INSTALL & LEAKAGE PROOF】The pop up drain includes two rubber seals and a brass fastener for easy installation. The silicone gaskets can seal water more tightly. We also enclosed the replacement part of the drain pipe seal and gasket for safe installation.【PREMIUM MATERIAL】Our pop up sink drain is constructed from durable solid brass and the tailpiece is stainless steel. It is plated with a lifelong polished chrome finish for trouble-free use.【SURFACE CHROME PLATED TREATMENT】Superior chrome finish is wear-resistant and scratch-resistant. And polished chrome coating provides long-lasting brilliance that perfectly complements faucet hardware. Choose the chrome finishes to match your bathroom faucet and create a beautifully coordinated look! Product Description ESFORT decorative push button bathroom sink drain is an ideal solution for use with popular lavatory sinks. It is ideal for sinks WITHOUT overflow. Premium Material Stopper material: Brass Tailpiece material: Stainless Steel Beautiful and Superior Finish Industry-leading Polished chrome, built to resist daily scratches, corrosion and tarnishing. Push and Seal Simply push the drain cap down to close and to seal, push again to open and to drain water. Install in 3 Minutes Simple but sturdy construction, no need any tool for installation，also come with Thread seal tape for leak-proof ensuring. How To choose the sink drain? How To choose the sink drain? How to choose the correct size? Drain hole size requirement: 1 5/8 - 1 29/32 inch(41-48 mm) Top dia. : 2 5/8-inch (65mm) Diameter at bottom: 1 1/4 in(32mm) type: drain for vessel sink without overflow or bathroom vanity sink without overflow with a minimum drain hole diameter of 1 5/8" .