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frontpage Posted by GimmeYoTots • Feb 3, 2023
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frontpage Posted by GimmeYoTots • Feb 3, 2023

14-Piece Bosch Cobalt M42 Drill Bit Set w/ Case

+ Free Shipping

$28

$33

15% off
Amazon
26 Comments 21,269 Views
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Deal Details
Amazon has 14-Piece Bosch Cobalt M42 Drill Bit Set w/ Case (CO14B) on sale for $27.78. Shipping is free.

Thanks to Community Member GimmeYoTots for sharing this deal.

Product Information:
  • Provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
  • Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
  • High-heat resistant bits – withstand high-temperature applications for extended periods of time
  • Thick web-helix design – provides additional stability in tough applications
  • Surface-hardened tip – penetrates tough abrasive materials
  • Includes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2"

Editor's Notes

Written by Corwin | Staff
  • About this deal:
    • This price is $5.20 lower (15.76% savings) than the next best available price from a reputable merchant, with prices starting at $32.98 at the time of this posting.
  • About this product:
    • This drill bit set has a rating of 4.7 out of 5 based on over 4,060 customer reviews on Amazon.com
  • About this store:
  • Additional Note:
    • Please refer to the Forum Thread for additional discussion regarding this deal.

Original Post

Written by GimmeYoTots
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 14-Piece Bosch Cobalt M42 Drill Bit Set w/ Case (CO14B) on sale for $27.78. Shipping is free.

Thanks to Community Member GimmeYoTots for sharing this deal.

Product Information:
  • Provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
  • Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
  • High-heat resistant bits – withstand high-temperature applications for extended periods of time
  • Thick web-helix design – provides additional stability in tough applications
  • Surface-hardened tip – penetrates tough abrasive materials
  • Includes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2"

Editor's Notes

Written by Corwin | Staff
  • About this deal:
    • This price is $5.20 lower (15.76% savings) than the next best available price from a reputable merchant, with prices starting at $32.98 at the time of this posting.
  • About this product:
    • This drill bit set has a rating of 4.7 out of 5 based on over 4,060 customer reviews on Amazon.com
  • About this store:
  • Additional Note:
    • Please refer to the Forum Thread for additional discussion regarding this deal.

Original Post

Written by GimmeYoTots

Community Voting

Deal Score
+35
Good Deal
Get Deal at Amazon

Price Intelligence

Model: Bosch 14-Piece Assorted Cobalt Jobber Length Twist Drill Bit Set Stainless Steel | CO14B

Deal History 

Sale Price
Slickdeal
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Current Prices

Sort: Lowest to Highest | Last Updated 3/19/2025, 11:31 PM
Sold By Sale Price
Amazon$32.53
Lowe's$34.98
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Top Comments

jeff34270
Be careful with Drill Hog. They like to slap American flags on everything and often will use a US made case, but most of their actual bits are of unknown origin.

They also just use a shopify website, have no phone number, and use a rented UPS box for their address. Not really much of a way to run a legitimate business.

I sure wouldn't pay a premium because they have a US flag on their card.
GimmeYoTots
Sorry, I have neither; so nothing to trade. I do have a Rural King, though!

As an aside - I do own this set. I own a bunch of different drill bit sets. This Bosch set does live up to the Project Farm hype. I had to drill out a couple completely rusted bolts on a sensor on one of my cars (using a close quarter drill) and these bits cut through that steel like the proverbial hot knife through butter. I agree the MSRP is a bit of a joke, but these are unquestionably worth the normal ~ $35 Amazon asking price.

26 Comments

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Feb 5, 2023
448 Posts
Joined Nov 2010
Feb 5, 2023
mcosf
Feb 5, 2023
448 Posts
wow, what's up with the MSRP? crazy
2
Feb 5, 2023
958 Posts
Joined Apr 2014
Feb 5, 2023
CaptainCheap0
Feb 5, 2023
958 Posts
Op I'll trade you my local Menards for a Microcenter if you would like.
2
Feb 5, 2023
664 Posts
Joined Jul 2020
Feb 5, 2023
Mattacks
Feb 5, 2023
664 Posts
Quote from mcosf :
wow, what's up with the MSRP? crazy
Although that's a bit high, and it probably never actually sells for that MSRP, cobalt bits are expensive. You really don't want to waste these where a high speed steel bit will suffice. These are for drilling into really hard materials.
Original Poster
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This user is an Expert in Home & Home Improvement
Feb 5, 2023
5,004 Posts
Joined Feb 2019
Feb 5, 2023
GimmeYoTots
Original Poster
Pro
Expert
This user is an Expert in Home & Home Improvement
Feb 5, 2023
5,004 Posts

Our community has rated this post as helpful. If you agree, why not thank GimmeYoTots

Quote from CaptainCheap0 :
Op I'll trade you my local Menards for a Microcenter if you would like.
Sorry, I have neither; so nothing to trade. I do have a Rural King, though!

As an aside - I do own this set. I own a bunch of different drill bit sets. This Bosch set does live up to the Project Farm hype. I had to drill out a couple completely rusted bolts on a sensor on one of my cars (using a close quarter drill) and these bits cut through that steel like the proverbial hot knife through butter. I agree the MSRP is a bit of a joke, but these are unquestionably worth the normal ~ $35 Amazon asking price.
Last edited by GimmeYoTots February 5, 2023 at 10:30 AM.
1
Feb 5, 2023
368 Posts
Joined Jun 2011
Feb 5, 2023
Fainthearted
Feb 5, 2023
368 Posts
I think cobalt drill bits can be sharpened.
Feb 6, 2023
2,875 Posts
Joined Feb 2007
Feb 6, 2023
Hardwyre
Feb 6, 2023
2,875 Posts
Quote from Fainthearted :
I think cobalt drill bits can be sharpened.
Yes. It's highly recommended to use cutting fluid or other heat mitigation tricks, but otherwise they sharpen just fine.
1
Feb 6, 2023
2,875 Posts
Joined Feb 2007
Feb 6, 2023
Hardwyre
Feb 6, 2023
2,875 Posts
I have this exact set and it works fantastic especially when other bits fail. I need to learn to sharpen them though because I've abused a couple bits so might as well grab a second set.

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Feb 6, 2023
827 Posts
Joined Feb 2010
Feb 6, 2023
rotarypower101
Feb 6, 2023
827 Posts
Possible anyone has first hand experience with these Bosch M42 VS harbor freight M35?
Wish there was a affordable M42 115pc indexed kit out there.
1
Feb 6, 2023
371 Posts
Joined Feb 2011
Feb 6, 2023
fo4imtippin
Feb 6, 2023
371 Posts
I have these m42 cobalt as well as an m35 set. The m42 have 8% cobalt over 5%. The both work, but the m42 drill a little easier. I have broken more m42 bits though because they are more brittle when I push through the hole and rotate them. For steel, these m42 are the best.
Feb 6, 2023
1,643 Posts
Joined Nov 2018
Feb 6, 2023
drsnowmon
Feb 6, 2023
1,643 Posts

Our community has rated this post as helpful. If you agree, why not thank drsnowmon

I needed to install a front mount intercooler on my VW. I tried Kobalt, Dewalt, and Makita, and they all broke. This one went through my front crash guard, it's well worth the price
1
Feb 6, 2023
16,124 Posts
Joined Nov 2006
Feb 6, 2023
psyctto
Feb 6, 2023
16,124 Posts
Quote from drsnowmon :
I needed to install a front mount intercooler on my VW. I tried Kobalt, Dewalt, and Makita, and they all broke. This one went through my front crash guard, it's well worth the price
FWIW...
sounds like you need less pressure, less speed and some cutting oil perhaps Wink
1
1
Feb 6, 2023
16,124 Posts
Joined Nov 2006
Feb 6, 2023
psyctto
Feb 6, 2023
16,124 Posts
Quote from mcosf :
wow, what's up with the MSRP? crazy
because Amazon is full of sh1t... MSRP listed on their site is always garbage.
CCC says average price since 2019 is 32$, still a good deal, just not earthshattering.
Feb 6, 2023
1,643 Posts
Joined Nov 2018
Feb 6, 2023
drsnowmon
Feb 6, 2023
1,643 Posts

Our community has rated this post as helpful. If you agree, why not thank drsnowmon

Quote from psyctto :
FWIW...
sounds like you need less pressure, less speed and some cutting oil perhaps
Low speed, less pressure, cutting oil, yes I'm well aware of that but thanks for your comment for others to see for proper hard metal drilling technique
2
1
Feb 6, 2023
238 Posts
Joined Jun 2011
Feb 6, 2023
rexqman
Feb 6, 2023
238 Posts
These are some of my favorite drill bits. Definitely worth the price and lasts a good long time.

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Feb 6, 2023
561 Posts
Joined Apr 2014
Feb 6, 2023
ryanchu06
Feb 6, 2023
561 Posts
Quote from rotarypower101 :
Possible anyone has first hand experience with these Bosch M42 VS harbor freight M35?
Wish there was a affordable M42 115pc indexed kit out there.
I'd recommend www.drillhog.com. They have them. I bought their set during holidays for a discount. They are USA made too
2

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