stainless steel, no deformation, in use.Mesh shape masher will easily cut potatoes or mushrooms into pieces of equal thickness : Stainless SteelColor: SilverShape: Mesh Shape SlicerDiameter: app.8cm / 3.35inQuantity: 1 It is very compact and useful in the preparation of salads and other dishes Great cooking tool to make various dishes and desserts like potato, pie, pumpkin pie Non-stick on cookware, easy to use and clean, keeps it new.It can be used for slicing potatoes, carrots, mushrooms