The plug core is made from aluminum alloy, with a flat profile for a lowprofile and comfortable touch. It is rustresistant and built for longterm use. Equipped with an anticlogging basket filter, this sink plug effectively captures hair and dirt to help prevent clogs and make cleanup easier. Fits drain holes with an inner diameter of 3440 mm (1.341.57 inches). Installation requires no tools, making setup quick and convenient. Dualmode design for flexible use. The bounce design and spring maintain strong elasticity over time, allowing smooth switching between storage (closed) and drainage (open) modes as needed. Key benefits Durable, rustresistant aluminum alloy construction Keeps hair and dirt from clogging drains with an easyclean basket filter Tool installation fits 3440 mm drains Twomode operation for storage and drainage with longlasting elasticity Flat, unobtrusive profile suitable for everyday use 23 practical use scenarios Bathroom sink: use the storage mode to hold standing water when needed while brushing teeth or washing hands, and switch to drainage mode to drain water quickly after rinsing. Kitchen sink: trap food debris in the basket filter to prevent clogs, then switch to drainage mode to allow quick disposal of dirty water. Utility or laundry sink: catch lint and dirt in the basket while performing tasks, with an easy switch to drain as required. Care and maintenance Remove and rinse the anticlogging basket filter regularly to keep drainage smooth. Wipe the flat surface as needed to maintain a clean appearance.