Multipurpose circle racks, circle wire racks could be put into air fryer to filter grease and avoid foods sticking to the bottom of cookware, steaming leftovers in a plate with a steam rack below is as convenient as using a microwave oven, with a wire rack below you could bake pizzas, pancakes, biscuits, cookies not only in a oven but also on a griddle or grill, avoiding the foods from burning on the bottom, perfect for serving foods like cakes or keeping freshly baked foods warm while grilling.