Cooks Standard NC-00247 Steamer Insert for Chef's Pan, 13-Inch/32cm Multi-Ply Clad stainless steel bond 5 layer of metal together, a combination of 18/10 premium stainless steel and Aluminum core 5-Layers of clad metal for high-quality performance and excellent cooking results, The interior is premium-grade 18/10 stainless The cookware's cast stainless-steel handles come riveted for strength and durability The cookware can be used on all stovetop surfaces, including induction stovetop and it withstands an oven's heat up to 500 degrees Fahrenheit The Multi-Ply Clad stainless-steel cookware cleans up easily by hand or in the dishwasher