79mm Sink Stopper Hole: The strainer basket is 79mm in diameter, the stopper is 8mm in diameter. Fits compatible 79.3~80mm diameter sink drains. Note: Please make sure it is the correct size before purchasing. .Thicker Design: The kitchen sink strainer is made of premium 304 stainless steel, we have also increased the thickness of the sink stopper to make it more durable and stable. .Dual Function Strainer and Stopper: The small sink stopper can be used as a sink stopper and filter at the same time. Press the button down to fill the kitchen sink and lift it slightly to drain the water and collect all residues. .Smooth Design: Our strainer plug is designed in a smooth shape with small holes, it can filter waste effectively but allow water to flow. It is also easy to clean. You just need to rinse it with water after emptying the waste and it will remain the same as new.