... .width:0.5m-3m 4.shape:Round, Square Galvanized Triangle Hole Punches Punch Metal /Punched Metal/perforated metalMaterialCarbon steel ... galvanized,polished,or no finishHole shapeRound, Square, Slot, Triangle, Long round, Scale, Diamond, Oval, Hexangular, etcHole dia*pitch(mm) ... : Long hole, square hole, round hole, hexagonal hole, scale hole, stretching and other special-shaped hole.· Hole style: ...