... .5m-3m 4.shape:Round, Square Galvanized Triangle Hole Punches Punch Metal /Punched Metal/perforated metalMaterialCarbon steel ... ,or no finishHole shapeRound, Square, Slot, Triangle, Long round, Scale, Diamond, Oval, Hexangular ... Hole shape: Long hole, square hole, round hole, hexagonal hole, scale hole, stretching and other special-shaped hole.· Hole style: circular hole, hexagonal hole, fish scale hole ...