Ratings & Reviews for DEWALT 14 -Piece Assorted Assorted Cobalt alloy steel Jobber length Twist Drill Bit Set
Ratings may include incentivized customer reviews.
What Customers Are Saying
The cobalt drill bits demonstrate mixed performance. Many users report the bits effectively drill through hardened steel, stainless steel, and other tough materials, with some describing them as highly capable. However, a significant number have experienced issues, including bits breaking, dulling, or failing to meet expectations, especially with smaller sizes. While the bits appear well-suited for challenging drilling tasks, the quality and durability seem inconsistent. Users recommend caution, slow speeds, and cutting oil when drilling, especially with smaller bit sizes.
Customer review summary generated by AI, including incentivized reviews.Not for drilling out bolts
Maybe these are useful for drilling into sheet metal, but I was trying to use them to drill out rusted/broken bolts on my car's suspension, and 4 of the bits broke about a 1/4 inch off the top. I was even trying to be very conscious of keeping the bits cool while drilling and also swapped the bits out to let them cool. I did find that once I made it through with a small bit, the broken bits were still useful for shaving off the sides of the bolt by gently rocking the drill around, using the sid...
They take a powerful drill that can go slow.
For hardened steel, these last a lot longer than Titanium.
Verified Purchaser
Hello, appreciative customer Thank you for taking the time to provide your feedback on the ( Model #DWA1240) and I'm sorry to hear about the bad ...
These are good drill bits.
Would RecommendI needed to drill thru stainless steel. All other bits I tried barely scratched the surface. Bought these and no problem. Drilled right thru.
Verified Purchaser
Perfect for drilling in steel
Would RecommendUsed the 3/8" bit on steel and it drilled through very fast.
Verified Purchaser
good
Would RecommendVerified Purchaser
Like butter
Would RecommendHad to drill 2 holes through a 3/16 steel plate. After spending an hour using every drill bit in my arsenal I decided to bite the bullet and get some decent bits. Checked reviews on Youtube and decided on either cobalt Bosch or black nitride Dewalt. Bosch bits had to be ordered and I didn't want to wait. Couldn't find the black nitride Dewalt bits, but Lowes had these cobalt alloy. Gave them a shot and am glad I did. Finished drilling the 2 holes in seconds. Couldn't be happier.
Not what Dewalt use to be.
Broke 1 and bent another on first project. Returned.
Verified Purchaser
Hello Joel. We appreciate your feedback on the product and are sorry to hear about the issue. Your feedback will help us to better our current and fu...
Hello.
Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the Bit set. Your feedback is valuabl...