The durable nylon bristles are stiff enough to tackle your dirty dishes, but they’re still safe for all your place settings and even non-stick cookware. Set of 2 replacement heads. Durable bristles are safe for non-stick cookware. Scraper on back of bristles easily removes baked-on food. For use with Soap Dispensing Dish Brush. Push a tab to eject the old head. Easily push off old head, slide new one into place.