Description of Drill America High Speed Counterbore 16
Pilot for counterbore. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. 3/16-inches shank diameter. Available in 1-3/4-inches overall length. 1/4-inches size.
According to my experience, this counterbore was a complete waste of time and money. The quality was poor, and it failed to produce the results I needed. The only BENEFIT was that it came in a proper size for my project .Unfortunately it failed to do its intended job. Save your money and buy a different counterbore instead..
i had high hopes for this counterbore based on its popularity in the Cutting Tools category, but I was sorely disappointed. Thanks to my knowledge gained in practice, I can confidently say that this product is not worth the investment. The cutting edges wore out quickly causing uneven and sloppy cuts. The only redeeming factor was the tool`s initial ease of use, but that quickly faded .Save your money and look elsewhere for a reliable counterbore..
The only complaint I have is the length of the shank. I wish it was a little longer. Some of the pilot set screws on some of my bits had trouble holding on.
Pros
HSS tools work well for most general purpose applications and offer a combination of hardness and toughness for wear resistance