Bought for perforating sheets for Exacompta 6 holes, drill is not suitable. Because if the holes 6 may actually be positioned freely, the form of the apparatus that one of the punches is "empty" when the two sets of holes are too close together. Thus, for a workbook with 2 times 3 holes and 7 cm between the two series, no problem. But for those like mine 2 times with 5 cm 3 hole between the two sets of holes, can not use this device: it will only 5 holes. Moreover, as has already been said, the holes are too big for small filing formats.