A bathroom sink stopper is a small device that fits into the drain hole of a sink to prevent water from draining out. It is typically made of rubber or plastic and has a small handle that can be lifted to open or close the stopper. Sink stoppers are an important part of any bathroom, as they help to keep water in the sink when it is needed and prevent it from draining out when it is not.
Sink stoppers are relatively inexpensive and easy to install. They can be purchased at most hardware stores or home improvement centers. To install a sink stopper, simply insert it into the drain hole and twist it until it is snug. Be sure not to overtighten the stopper, as this could damage the sink or the stopper itself.