Lasco 03-1039 Kohler Heavy Duty Kitchen Sink Strainer, Chrome Plated Brass3 1 2 Inch opening with lift post. Heavy duty duo strainer, Kohler style. For use as lavatory kitchen strainer for 3 1 2 Inch drains. Chrome plated brass Extra heavy duty kitchen sink strainer Kohler style For 3 1 2" drain opening Carded. WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more Information go to www. P65Warnings. ca.