The Plumber's Choice 3-1/2 in. - 4 in. Heavy-Duty Kitchen Sink Stainless Steel Drain Assembly with Strainer Basket KOHLER Style Stopper ESS3157 - The Home Depot
Danco 2.25-in Stainless Steel Rust Resistant Strainer in the Kitchen Sink Strainers & Strainer Baskets department at Lowes.com
3 1/2" Sink Basket Strainer with Fixed Post
Peerless stainless stell mesh strainer, 2pc. Fits most bathroom sinks and tub drains. - Walmart.com