This ProSource drain guard strainer assembly is made of stainless steel that stops the finest crumbs from going down the drain. The spin and seal strainer basket can trap debris and drain water through its holes. The built-in strainer keeps pieces of food and debris from entering your drain to help prevent expensive and disruptive plumbing clogs. Dishwasher safe. Stain and corrosion resistant. Ideal replacement part for peace of mind and designed for hassle free installation. Built to last.