These scissors are specially designed for cutting Kevlar material - Kevlar thread in particular. One blade is micro-serrated along the whole edge. The blades are made of high carbon alloy steel with Molybdenum and Vanadium edge 60~62, cutting edge hardness HV1200. The handles are especially designed for firm grip and to ease repetitive cutting action. Plus The Sharpest All-In-One Electrical Shears
