Like other reviews Liesen suggests, this cutter is unfortunately absolute botch. Already the packaging should have made me suspicious, because such "new" did not look it. Many Mir directly entgegeben two very "windy" plastic adapter to make use of a nano either Micro or Mini - but as with other already: from the metal adapter for cutting Micro to Nano lacked any trace even with me.
It is absolutely not advisable to cut a Microsim with this cutter without an adapter - which can go well in any case, since the Sim missing any guide.