Aringfes tart ring, special perforated design, venting holes allow heat to be evenly distirbuted, all the airs and steam to evacate to reveal your flat crust. 304 stainless steel material, food safe and dishwasher safe. Not Only Excellent for baking, layering, and molding, Its aslo a good choice for hand-made cakes at home,Enjoy your baking time with your family.