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3/16-in 3-9/16-in Cobalt alloy steel Jobber length Twist Drill Bit

Ratings & Reviews for DEWALT 3/16-in 3-9/16-in Cobalt alloy steel Jobber length Twist Drill Bit

4.2
105
Review
 4.2 out of 5
106 Reviews


81% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The cobalt drill bit received mixed reviews. Some customers found it highly effective, durable, and able to cut through tough materials. However, many reported the bit dulling, rounding off, or breaking after limited use, even on softer materials. The consensus is that the drill bit can work well for some applications but may not be reliable or durable enough for more demanding tasks. Customers should carefully consider their specific needs before purchasing.

Customer review summary generated by AI, including incentivized reviews.
106 Customer Reviews

Fits perfectly in a drill box set

Would Recommend

Was a perfect fit. Previous bit bent.

June 11, 2026
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Metal drilling

These are excellent for drilling into very hard steel like thst of metal t-posts .

December 2, 2025
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won't drill 2 screws out. might be ok on wood.

Would Not Recommend
September 18, 2025
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Response from DewaltProductExpert

Hello Valued Customer and thank you for your feedback on the DWA1212 DEWALT 3/16-in x 3-9/16-in Cobalt alloy steel Jobber length Twist Drill Bit. You...

DewaltProductExpertSeptember 19, 2025

Worth the money!

Would Recommend

Cuts through metal like butter!

August 17, 2025
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DeWalt brand Cobalt drill bit

The cobalt drill bit could not seem to drill into a set screw (that I was trying to remove). I expected the harder cobalt bit to be able to drill harder steel than ordinary high speed steel (HSS) drill bits, but this drill apparently could not drill into the steel of the set screw.

July 1, 2025
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Response from DewaltProductExpert

Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the DWA1212. Your feedback is valuable as...

DewaltProductExpertFebruary 18, 2026

Not the best

Would Not Recommend

The bit did not last drilling the “hard metal” it described.poor quality

February 27, 2025
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Response from DewaltProductExpert

Hello Scott, your feedback is valuable as we take into consideration every piece of feedback that we come across. We have documented your comments an...

DewaltProductExpertFebruary 27, 2025

Poor quality

Would Not Recommend

Poor cutting ability, cobalt is poorly constructed material. Not worth money.

January 31, 2025
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Response from DewaltProductExpert

Hello Dano, your feedback is valuable as we take into consideration every piece of feedback that we come across. We have documented your comments and...

DewaltProductExpertJanuary 31, 2025

Don’t buy it you want to cut throungbhard steel.

Would Not Recommend

I we as expecting a smooth definite cutting through harden steel. It was dull, cutting was poor, after 10 minutes very little penetration was made. The steel angle iron was from a bed frame. I pulled an old drill and cot the hole in about 5 minutes. It was a bad purchase.

September 4, 2024
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Response from DewaltProductExpert

Hello. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the 3_SLASH_16-in x 3-9_SLASH_16-in Cobalt...

DewaltProductExpertSeptember 5, 2024

Ridiculous...thumbs down

Would Not Recommend

It is absolutely NO WAY these are cobalt drill bits. It took me 6 hrs, off and on, to drill 4 holes in 1/16 SS. I bought 2 bits and never open the 2nd, with the intentions of taking them both back for a refund. I have used these drill bits before on the SAME project with a totally different experience. Portsmouth, Virginia store located in Victory Crossing. No exaggeration .... 6hrs to drill 4 holes. Ridiculous.

July 8, 2024
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Response from DewaltProductExpert

Hello Jharrison. Thank you for taking the time to provide your feedback. I'm sorry you weren't pleased with the DWA1212. Your feedback is v...

DewaltProductExpertJuly 19, 2024

Drill bit

Would Recommend

Did a good job

June 25, 2024
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