... 2, Round/Square/hexagonal/etc 3, Screen mesh hole meshpunched hole mesh 1, stainless steel, galvanized steel, aluminum, copper ... 2, Round/Square/hexagonal/etc 3, Screen meshpunched hole mesh Punching hole meshMaterial: steel, stainless steel, galvanized steel, aluminum, ... copper, brass and others.Hole types: round, square, staggered and decorative patterns.Perforated ...