Material: Stainless Steel, Carbon Steel, Zinc, Galvanized, Aluminum, Brass, Copper,Plywood, Fiberboard, PVC plate etc.The hole shape: Round, Square, Long round, Triangle, Scale, Diamond, Oval, Hexangular, Slot etcPitch: The pitch is the distance from the center of one hole to the center of the nearest hole in the next adjoining row.
perforated stationery