... steel cooking set 2.Suitable for all heat source 3.Feel heavy,energy saving 4.OEM Cooking set:1,Diameter/Height:16x7cm saucepan ... :tri-ply steel(0.5mmss304+1.3mm Alu+0.5mmss430)3,Feature:Straight shape, no step with cut edge, Mirror polishing ... quality, food grade s/s material safe for food touching, energy saving. Best selling Tri-Ply Steel cooking set