Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits
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Jobber Drill Bits
Experiential insights by users
About Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits
Overall Feedback:
89% positive
92% appreciated its precise drilling accuracy, though 8% experienced deviation
I tried 6 different sizes of drill bits but only 1 worked as expected. The other 5 drill bits broke off, changed color or did not make any progress while drilling.
92% praised for its fast drilling speed, while 8% found it slow
The drill bit didn't go through like butter, but it worked for what I needed.
I was able to drill the hardened screws with these bits and they came free after a little while.
I noticed that the larger drill bit kept turning without any outcome.
88% liked its long-lasting durability, but 12% experienced frequent breakage
I found that the bits have good durability as they performed extremely well on hardened steel.
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I used the drill bit for what I needed, even though it didn't go through easily.
Out of 6 different sizes, 3 broke off, 2 just changed color, and the larger size just kept on turning without any outcome.
93% liked the comfortable grip design
I was able to drill the holes easily using the bits and get an easy out.
95% found it resistant to heat buildup, but 5% experienced thermal damage
I had trouble with the bit at first, but managed to drill four small holes for the brackets. I followed advice to set my drill on #18, use a little WD-40, and go slow.
97% praised for its versatility in drilling various materials, though 3% had difficulty with metal
On hardened steel, the bits performed exceptionally well.
I tried 6 different sizes of jobber-drill-bits and only 1 worked. The other 5 broke off or changed color.
