I ordered it for my Filofax staff, tried him and bähm, it did not fit -.- I was first angry, was an afternoon cranky and am my husband went on the nerves. Evening I again sat down at the desk and Oo lo and behold, you can adjust the aperture size: D since I was happy again.
and on the broadest level, it fits perfectly for my Filofax Personal
One star deduction, however there anyway because the hole size of the standard size is, so as you would use a normal punch. Advantage of this is that you can use normal hole reinforcement. However halt siehts not so, as in the included sheets. I do not mind and would be particularly no reason not to buy the punch.
Buy recommendation from me;)