1. Standard 1 3/4inch Drain Opening: perfect for any above-counter vessel sink without overflow.2. Solid Metal Construction: The pop-up drain stopper is constructed of brass and type premium stainless steel, protecting against corrosion and rust in a humid environment.3. Easy to Install, No Leaks: All required gaskets, seals and brass mounting nut are included. Please make the gaskets are in the right position (please refer to product pictures or instructions) to avoid leakage.4. Easy to Operate: 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. For routine cleaning, you can turn the upper cap counter-clockwise to unscrew and remove.5. Brushed Brass Finish: Matte brushed brass finish, not mirror-like shining finish nor champagne gold finish, with a combination of clean, refined lines for a high-end style.Specifications:Overflow: NOHeight (Pop-Up Open): 8.5-inch (215mm)Diameter of the Pop-Up Cap: 2.6-inch (66mm)Max. Thickness: 1.97 inches (50mm)Tailpiece O.D.: 1.25 inches (32mm)Colour: BlackMaterial: brass+stainless steelSize: 205x31.5mm, mounting aperture: 41mm-55mmPackage Contents:1 x Sink DrainOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.