... : Stainless steel, carbon steel, brass, aluminum, titanium, nickel, Al-Mg alloy.(2)Hole pattern: Decorative, Hexagonal, Round, Slotted, Square, fish, and some ... stainless steel,carbon steel, brass , aluminum , titanium , nickel , Al-Mg alloy Hole Pattern Decorative, Hexagonal, Round, Slotted, Square, fish, and some others ...