【Kitchen & Bathroom Sink Drain Stopper】 The internal diameter of our bathroom sink stopper is 1.1-1.26 inch, sink drain is straight through or greater than 1.96 inches height. Please make sure to measure your sink's drain hole before purchasing, and choose the suitable one. 【High-Quality】Brass & stainless steel materials make this cute sink drain stopper durable, explosion-proof, crack-proof, and not easy to rust; the high-quality silicone rings in between with good air-tightness can effectively prevent water leakage. 【Built-in spring】this pop up sink stoppers for bathroom sink can be freely switched between pop-up and closed states with just one tap, which is more convenient and easy to use than traditional sink stoppers 【Anti-Clooing Basket Inside】The bathroom sink filter may collect hair, rings, dirt and all things, not only provides effective anti-blocking and fast water flow, but also prevents the loss of valuables one. 【SIMPLE INSTALLATION】Tool-free Installation, Anyone can install the pop-up drain because of its simple structure, just take out the old one and insert the strainer core to complete install.