... Iron, Aluminum Hole: square,round,diamond, Hexagon Title:Metal Coated Mesh Speaker GrillRound hole punch perforated metal stainless steel, Galvanized Iron ... : square,round,diamond, Hexagon Beautiful goodsRound Hole Punch Perforated Metal Mesh/Sheet speaker grill1. Product thickness: 0.03 mm ~ 1. ... 5mm.2. Product size: 1* 1mm ~ 300* 500mm.3. Smallest open hole: Ø 0.1mm.4. Smallest line width: 0.025mm.5 ...