But Wobbly part works.

So for the price we must not solid, handmade, expect precision tool. The device is a little shaky but works wonderfully. The only restriction, which is why a star deduction, there is no guidance. There's nothing here. No sketch, not even something which from the Chinese was the Indian and then translated into German by Google. Simply nothing. This is a shame and for the application scenario also not without risk.

After 2 pictographs are engraved symbolizing the correct position for punching the inserted SIM card. The you should definitely pay attention!

Another Praxistip: If you checked again the correct position of the SIM card through the punched hole of the cutter prior to the actual stamping operation and corrected if necessary (fits up / down everything is straight and parallel, etc.) then one does not have nachpfeilen much and scrapped less quickly a SIM card. And what thanks to lack of guidance often not known is the so-punched Nano SIM is a touch (approximately 10%) is thicker than a real nano-SIM. So maybe even once "arrows" on the thickness. This makes the cutter is not logically and it may otherwise already be the contacts slightly bend in the worst case, and "real" Nano SIM cards are no longer legible or loose contacts occur. Current info but only in passing ...