UNIVERSAL SIZE: This pop-up basket drainer is a universal version stainless steel product with elastic core that can be used in different types of basin drains. The inner diameter of the sink stopper strainer is 32mm. Fits drain holes with an inner diameter of 32 mm - 42 mm (1.25 - 1.65 inches). Easy to install: No tools required, easy to install with bare hands. You simply take out the old bounce core and install the new one. Because of their simple construction, anyone can install a pop-up drain. If you want to use it with a larger sink hole diameter, you can use our included rubber ring to increase the inner diameter of the sink plug. High-Quality Materials: The sink drain plug is mainly made of high-quality stainless steel and thickened copper materials, which is strong, rust-proof and crack-proof. With its good elasticity and rebound strength, it drains water quickly and seals water quickly. Easy to use. No tools required. . Comes with two sizes of silicone rings: 1.56", 1.65" to fit any standard sink drain. To clean, simply take your hair extensions and wipe away hair and debris. No more mess and chemicals damaging your drains. (Please measure your drain before purchasing. Fits any tub drain 1.25" to 1.65" wide, with a minimum depth of 1.2") PERFECT COMPATIBILITY: Our universal bathroom sink stopper fits most sink drain holes. (Inner diameter 32mm-42mm/1.25"-1.65") So it can be used for washbasin, bathroom sink drainage. Be sure to measure your sink's drain hole before purchasing.