【Universal Size】Our kit includes two replacement sink stoppers and rubber rings. The universal sink stopper installation diameter is 34mm and the rubber washer is 39mm in diameter, it is suitable for sink holes from 34mm to 38mm, 1.5 inch (38mm) is the opening common bathroom sink in Europe. Before Purchasing: Please make sure your sink drain hole size is between 34mm-38mm. 【Premium Material】The universal water pop-up sink drain is made of thickened stainless steel and elastic brass core, which is anti-corrosion, anti-rust and durable. The surface is coated with multiple layers of chrome plating, which can effectively prevent scratches, corrosion and rust, and the surface is very smooth and can be perfectly matched with your sink. 【Two-mode switch 】 The pop-up design of this drain strainer sink plug reverses the inconvenient drain mode. It is a 2-in-1 bathtub stopper and filter. Just gently press the top cap to switch between 2 modes: plug (to conserve water) and filter (to drain water). Basin Stopper Good bouncing and rebounding force, quickly seal and drain water with one push. 【Built-in Strainer】Unlike ordinary push button drains, this pop up sink drain has a anti-clogging basket filter inside, which can collect hair cleanly and effectively prevent the drain from clogging. If you accidentally drop your jewelry or ring into the drain hole, don't worry, our built-in filter will help you catch your jewelry and help you find it. 【Easy to install】None tool required, easy to install with bare hands. You just need to remove the old rebound core and insert our push type rebound core. Our included silicone non-slip pads fit snugly over your sink's drain holes to help store water and prevent leaks, suitable for bathtubs, bathrooms, sinks, etc.