Made of a high carbon, hardened stainless steel, the Kai 7300 is the 12-inch professional scissor that is ideal for thicker, more difficult fabrics. The addition of Carbon allows for a steeper cutting angle, giving the scissor a sharper, finer edge that last. The carbon also allows the finer edge to be more durable, which in- turn, extends the cutting life of these professional scissors. It is also considered an ideal length for upholsterers and upholstery projects.