The Kai 7230 is the 9-inch professional scissor, ideal for thicker, more difficult fabrics. The 7000 series scissors, including the 7230, are made of a high carbon, hardened stainless steel.
The addition of carbon allows for a steeper cutting angle, giving the scissor a sharper, finer edge. The carbon allows the finer edge to last longer. This gives the 7000 series a better ability to cut thicker fabrics and allow for easier use.
The Kai 7230, being a 9-inch, is considered a lighter scissor, yet long enough for standard sewing projects. When compared to the Kai 7250 10in scissors, the Kai 7230 is better suited to people with smaller hands or desire lighter weight.