The Plumber's Choice 3-1/2 in. Strainer Basket with Ball Post Replacement for Kitchen Sink Drains Stainless Steel and Rubber Stopper 017532IN - The Home Depot
4 Pcs Kitchen Sink Strainer, SZUAH Stainless Steel Drain Filter Strainer with Large Wide Rim 4.5" Diameter Perfect for Most Kitchen Sinks - Amazon.com
Kitchen Sink Strainer, Thicker Stainless Steel Sink Strainer for Bathroom Kitchens, Outer Dimension 4.4inch/11.2cm-2 Pieces | Fruugo ES