... small error and good quality; smooth surface, beautiful, accurate holes, uniform array, durability; resistance to bending, anti-aging and ... for your reference.Round hole, Slot holes round ends, square hole , Slot holes , Slot round holes , Triangle hole , scale hole , ... hole , cinqfoil hole , herringbone hole , mini hole , other holes brass perforated metal specificationround hole plate thickness 0.3-6 ...