... , Aluminum Hole: square,round,diamond, Hexagon Title:Metal Coated Mesh Speaker Grill Round hole punch perforated metal stainless steel, Galvanized Iron, Al ... ,diamond, Hexagon Beautiful goodsRound Hole Punch Perforated Metal Mesh/Sheet speaker grill 1. Product thickness: 0.03 mm ~ 1.5mm.2. Product ... processing, electroforming and electroplating and so on. Metal Coated Mesh Speaker Grill