General compatibility Compatible with most sinks, including kitchen sinks, home sinks, and bathtubs. Inner diameter 34 mm to 40 mm. Please confirm your drainage hole size before . Upgraded popup design Press the lid to switch between storage mode and drain mode. The mechanism holds securely in place and will not tip over when the button is pressed. Leakproof seal Upgraded multilayer sealing with a ring design provides a tight seal and helps prevent leakage. This design reduces the risk of leakage caused by button failure seen in traditional sink water filters. Efficient drainage and filter Mesh filter plate captures hair, dirt, and small objects to help prevent clogs. Upgraded dual filters make cleaning easier. The selfclosing drain core automatically closes when there is no water, reducing the chance of pests escaping from the pipes. Use scenarios Kitchen sink: while rinsing dishes, use the storage mode to hold water and debris, then switch to drain mode to release contents as needed, helping to manage clogs and mess. Bathroom or utility sink: prevent hair and debris from entering the drain during cleaning or grooming tasks; switch to drain mode to clear accumulated material when needed. Laundry or cleaning area with a sink: capture lint and small items with the dual filters, then clean the filters without disassembling complex parts. This design emphasizes reliable compatibility, a secure popup mechanism, a leakresistant seal, and practical filtration for everyday sink use.