This Xuron brand Memory Wire Cutter is the only tool you should use to cut memory wire, steel or hard wire. The cutting blades of this tool completely bypass, causing them to break the wire rather than squeeze it in order to cut. As a result, both the cut and cut off pieces of wire are near perfectly flat. Works equally well on both round and flat memory wire. Cuts hard wire up to 18 ga. (1mm) and soft wire up to 12 ga. (2 mm).