【 Rust and Corrosion Resistant for Long-lasting Use 】Our drain stoppers are made of stainless steel and brass. And we have thickened the brass. They can effectively protect the sink stopper from rust and corrosion caused by household sewage and oil. It can stay as new even if you use it for a long time. 【 Inner diameter of the filter with applicability 【99% Pop-up Drain, Easy to Install】Our sink stopper's filter inner diameter is suitable for drain holes with an inner diameter of 34mm to 40mm. It has perfect compatibility and can be used for 99% of sink drain holes. 【 Pop-up drain, easy to install 】Our drain stopper has a pop-up design. It has a simple structure and does not require any tools. You can demolish it easily and quickly. There is no need to replace any drain parts. Simply remove the original copper core, insert our drain plug, gently shake the plug to fit the drain hole, and press the switch to save and drain water. 【 Removable basket, easy removal of foreign objects and