Review on Chicago Latrobe Heavy Duty Cobalt Jobber Length: The Ultimate Tool for Tough Jobs by Greg Maxwell

As someone who works in the industrial and scientific field, I was extremely let down by these drill bits. Despite being marketed as heavy-duty and cobalt, they barely lasted through a single project before dulling. The only positive is that they are relatively inexpensive. However, the poor quality and disappointing performance make them not worth the investment. Save your money and invest in a higher-quality option.