Universal SizeThe sink drain stopper fits drain holes with an inner diameter of 34mm to 40mm (1.34-1.57 inches) and is compatible with various types of drains. The included silicone ring allows size adjustment for a secure fit. Suitable for most sinks, including kitchen sinks and bathroom basins. (Please measure your drain hole before purchasing)Pop-Up Drain ValveThis upgraded pop-up drain stopper operates by simply pressing the top cover to switch between open and closed positions. The mechanism remains stable and does not tilt when pressed. Features an improved multi-layer sealing ring design for a tight, leak-proof seal, preventing water leakage commonly caused by worn or faulty traditional drain stoppers.Built-in StrainerDesigned with an integrated anti-clogging basket filter that catches hair, debris, and small objects to help prevent blockages. All components are fully disassemblable for easy cleaning and maintenance.High-Quality MaterialConstructed with durable, thickened ABS and a brass core with electroplated finish for long-lasting performance. Resistant to rust, cracking, and leaks under regular use.Easy to InstallPack of 2, no tools required. Remove the old stopper and insert the new one for immediate use. Each unit comes with a washer; one additional large washer is included. Package includes: two stoppers and three washers.