Dr. Slick Tungsten Carbide Hair Scissors are some of the toughest yet fine cutting tools out there. The blade is sharp but yet withstands a lot of cutting while maintaining it's edge. Tungsten Carbide is 7x harder than stainless steel, thus giving it the durability to keep the edge sharp. The longer design, compared to the all purpose, allows for better shaping and more durability when dealing with hair and synthetics