Our durable Collapsible Stopper & Strainer is just what the plumber recommends. A turn of the knob drops the stopper down and prevents liquid from draining. Another turn and the stopper stays up, allowing water to drain but food particles to collect. Collapses for easy storage. Holes large enough to drain but small enough to collect food Turn the knob and drop the stopper, preventing liquid from draining Discard food easily with handy knob Collapsible for easy storage