The easy to use threaded basket is great for kitchen and lavatory sinks. The basket is designed for a sure seal but can be loosened to drain the sink while keeping items from entering your drain. Fits up to a 2" drain opening. Made of die cast steel. DH part # 513-2152 includes strainer, basket, rubber washer and locknut. DH part # 513-2172 includes strainer, basket, tail flange, slipnut, locknut and rubber washer.