The 410 Micro-Shear Flush Cutter is a premium grade version of the 170-II Micro-Shear flush cutter. Its size and shape are optimized for work in high density areas. Their patented Micro-Shear blade by-pass reduces both cutting effort and mechanical shock (impact) transmitted to the component. High carbon steel blades are precision ground to ultra sharp cutting edges. A unique, state-of-the-art heat treating process yields a Rockwell hardness of 57-59 C. The result is a tough, precise, durable flush cutter capable of reliably and economically cutting Dumet and Kovar leads. Flush cuts soft wire up to 20 AWG (0.8mm).