Review on Amana Carbide Adjustable Countersink Depth Stop Cutting Tools by Joey Quade

These bits are a waste of money in the "Industrial and Scientific" WORLD... Through trial and error I found that the adjustable depth stop is not accurate and the carbide material wears out quickly. The only pro is that they do create a clean countersink, but the cons outweigh this small benefit. Avoid these bits if you need reliable and long-lasting cutting tools for your job..