This countersink piece is a game-changer for industrial and scientific cutting needs .The cutter sits nicely in the drill, creating a smooth and even countersink. The best part is the precision of the degree scale which allows for consistent and accurate countersinks every time. The only downside is the initial price point, but it's definitely worth the investment for the quality and precision it provides. Overall, a top-notch choice for industrial and scientific cutting tools..