It can cut through copper wire with diameter of 1.3mm and iron wire with 1.0mm. It can cut above 16 AWG stranded wire. 306 is 0.12 inch and the length of cutting edge is 0.51 inch. It can cut through copper wire with diameter of 1.6mm and iron wire with 1.2mm. It can cut above 14 AWG stranded wire. 308 is 0.12 inch and the length of cutting edge is 0.59 inch. It can cut through copper wire with diameter of 2.2mm and iron wire with 2.0mm. It can cut above 12 AWG stranded wire. Made of Stainless Steel - This flush cutter is made of Martensite stainless steel. It is not easy to be rusted. The steel plate is thick and hard. The steel plate is heat-treated and bright-treated and the cutting blade is heat-treated by high frequency wave. The Blades are Aligned and Sharp - The blades are aligned and it can cut equally well. And two steel jaws are angled on the inside for strength. The two cuttin...