This Italian-made 5" (125mm) cutter is ideal for cutting soft wire up to 16 gauge. This tool has a better hardness & will efficiently cut metal over a longer time. 58 Rockwell hardness. For use with wire 16 gauge or less. Max cut 1.3mm copper wire. It's NOT suitable for cutting memory wire, flex wire or steel wire. Shear-action creates a flush cut, which requires less finishing.