... % 3.width:0.5m-3m 4.shape:Round, Square Galvanized Rectangular Metal Hole Punch Punch Metal /Punched Metal/perforated metalMaterialCarbon steel, Aluminum, Brass, Copper.FinishPowder coated ... ,galvanized,polished,or no finishHole shapeRound, Square, Slot, Triangle, Long round ...