Elkay LKD35 Flange and Stopper, 

Features:
• Elkay offers colored strainers and disposal flanges to match your faucet and accessories. Fitting 3 ½" diameter drains, Elkay Duo Strainer has a removable basket and stopper.
• Disposer Flange snaps over most popular disposers.

Come in 4 Choices of Color : Black,Almond,Cameo White, Glacier White