This countersink tool is difficult to use and does not provide consistent results. The adjustable depth stop constantly slips, making it hard to get precise cuts. On the plus side the carbide material is durable and can withstand heavy use. However, the unreliable performance MAKES this tool a poor choice for industrial and scientific applications..
Pros
Adjustable depth stop allows for precise and consistent countersinking.
Cons
Difficult to use for those not experienced with adjustable cutting tools.
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..
Pros
Easy depth adjustment for countersink cutting tools
Cons
Requires manual adjustment which can be time consuming