... Hole: square,round,diamond, Hexagon Title:Metal Coated Mesh Speaker GrillRound hole punch perforated metal stainless steel, Galvanized Iron, Al ... Punch Perforated Metal Mesh/Sheet speaker grill1. Product thickness: 0.03 mm ~ 1.5mm.2. Product size: 1* 1mm ~ 300* 500mm.3. ... (including 301, 304, 430, 201,303,316, etc), Copper, Silicon steel plate, Aluminum, nickel, Magnetic material and so on.The ...