Krowne 3 1/2" Kitchen Sink Drain w/ Basket

Krowne 3-1/2" Kitchen Sink Drain, with basket, 4-1/2" top dia., 1/2" NPS male, includes locknut & washer, stainless steel   Specifications Series Royal Series Inlet 1-1/2" NPS Male Top Diameter 4-1/2" Drain Size 3-1/2" Features Locknut and washer included Stainless steel with metal post Used on all kitchen sinks