The Oster Detachable Blade Size 3 1/2 76918-146 is designed for use with the Oster Classic 76, Power Line, Power-Teq, and Star-Teq clippers. Ideal for creating clean fades, Ivy Leagues, and flat tops, this blade delivers precision for sides and napes. With a Rockwell Hardness rating of 62, it stays ultra-cool during use, ensuring durability and longevity for consistent performance.