... Diameter 1/16" Straight Centers 28.28% Open Are Round Staggered Perforated MetalMaterial Mild steel perforated metal screen; galvanized ... sifting of grains, decorations and designs of buildings.Perforation patterns Round perforations, square perforations, slotted perforations, fish scale perforations, ... know freely , it will be our great pleasure. Round Staggered Perforated Metal (HIGH QUALITY)