Material: Made from high quality stainless steel. Thickness: Features 0.5mm thickness. Cookware: Get a three-piece three-tier steamer set. Rolled edge: With a 1.5mm aluminium bottom rolled edge. Set includes: two 18cm steamers and an 18cm casserole pot with a lid. Mirror polishing: Complete with a mirror polishing. 3-Piece Steamer Set | Living Social | Living Social