Review on 🔩 Steelex D2114 64 Inch Cobalt Drill Bit by Brad Ward

I had to drill some 3/8" holes in a 3/16" steel angle. Using cutting fluid I ran these through the first hole, then as others have noted I had an error in the second hole. A large piece of the bat broke off, rendering the bat unusable. This type of failure should not occur with a cobalt bit, especially when cutting fluid is used.