Brief Information of Perforated Metal Hole Size: 0.1MM-100MM Thickness: 0. ... Opening: Round, oval, square, rectangular, rhombus, hexagon, scale shape and composition of different shapes, also other special shape.Process: Stamping, leveling, cutting ... supplies, muffler, decoration, construction, electronics, transport, etc. Brief Information of Perforated Metal Hole Size: 0.1MM-100MM Thickness: 0.1MM ...