The OXO Good Grips Silicone Sink Strainer and Stopper combines sleek stainless steel with a flexible, stain-resistant silicone basket and drop-down stopper. The easy-to-clean silicone basket traps food debris to prevent stoppages. To empty the strainer, simply pick it up by the center post and invert the silicone basket for easy debris removal. To stop the sink to fill it with water, just give the large, comfortable knob a quarter turn in any direction and the stopper drops down for soaking dishes or pans. You'll know that you've gone from strain to stop or vice versa when the post clicks into place. The silicone underside won't scratch the sink basin.