Specially designed with code, can duplicates a key easily.

For whatever reason you can think for wanting to cut a key very quickly and without a machine (or the timely practice of filing) these Key Cutters are the tool for the job. Whether it be part of an impressioning excersise where small amounts can be nipped off using the measured snips or knocking up an impromptu bump key - the cut is a semihex and if you shave a few mm of the blade beforehand bump keys can be easily made