2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online
2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online__below
2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online_top
2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online__front

Material
Cobalt
Finish Type
Gold Oxide
Shank Type
Straight
Cutting Angle String
135 Degrees
Brand
Irwin Tools


Product information 1/8 in , 12pc

    Additional Information

  • ASIN: B00BRGK9L6
  • Customer Reviews: 4.7 out of 5 stars 1,227Reviews
  • Best Sellers Rank:
    #17,260 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
    #43 in Jobber Drill Bits
  • Date First Available: June 20, 2006
Product Warranty: For warranty information about this product, please click here
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Q: Would these be the best drill bits for drilling through shipping container steel walls?

A: I would think yes. I used these bits to drill a couple of hundred holes through 1/8 inch …

Toerau | 6 years ago

Q: Can anyone tell me the overall length of these 1/16 drill bits?

A: Thank you for choosing Irwin Tools. Our goal is to provide our customers with the highest …

Manufacturer Irwin C. | 6 years ago

Q: Would this bit be able to drill out a wheel lug bolt on my van or is the bolt too hard?

A: Recommended Applications are as followed: Tough metal drilling, including heavy-duty abras…

Manufacturer STANLEY BLACK+DECKER | 3 years ago

Q: What''s the entire length of the 31/64 bit?

A: It''s in the description. 6"

MwM | 2 years ago

Customer reviews

4.7 out of 54.7 out of 5
1,227 global ratings

Top reviews from the United States

Default Reality
5.0 out of 5 starsVerified Purchase
Awesome Cobalt Bits
Reviewed in the United States on October 15, 2015
Size: 1/8 inStyle: 12pc
I''ve only used one of these bits for a few jobs, but I can tell right off that they are of excellent quality. For any of you considering the cost versus performance of a cobalt bit versus a cheaper titanium bit let me impart some additional information. I used to... See more
I''ve only used one of these bits for a few jobs, but I can tell right off that they are of excellent quality.

For any of you considering the cost versus performance of a cobalt bit versus a cheaper titanium bit let me impart some additional information. I used to work as a heavy maintenance structures mechanic for a major US airline. This job necessitated the removal of many fasteners made of titanium. Guess what kind of bit we used to remove the fasteners? That''s right; cobalt. A regular steel drill bit wouldn''t even mark the titanium fasteners, but a cobalt bit would go right through them like they were mild steel.

Another benefit of cobalt drill bits is that they stay sharper longer. The downside is that once they do need sharpening you are going to have a very hard time trying to sharpen them with a typical grinding stone.
27 people found this helpful
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Michael
3.0 out of 5 starsVerified Purchase
One broke, the other didn''t
Reviewed in the United States on December 1, 2020
Size: 21/64"Style: 1pc
I bought four of these as I tend to drill a lot of this particular diameter hole. The first one I used I was drilling through nice and soft 6061 aluminum. The piece was about 3/16" thick. The bit snapped before it even got through the metal! And yes, I was using... See more
I bought four of these as I tend to drill a lot of this particular diameter hole. The first one I used I was drilling through nice and soft 6061 aluminum. The piece was about 3/16" thick. The bit snapped before it even got through the metal! And yes, I was using lubricant and not drilling at an excessive speed or depth rate. The second drill bit finished the job without a problem and went on to do about 40 more without incident. So, these seem to be hit or miss. Quality control an issue? Maybe....or maybe the second one I got was the odd man out and the rest will be bad as well. I won''t know until it finally wear out/breaks and I need to grab the next one in the pack.
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EMK
3.0 out of 5 starsVerified Purchase
Didn''t keep an edge
Reviewed in the United States on July 22, 2020
Size: 1/2" x 6"Style: 1pc
I bought this to put 4 bolt holes in mild steel - 20 gauge sheet, doubled, about 2 mm total depth. I used cutting oil and a hand held Makita 3/8ths drill (love that drill - 25+ years of service). The first hole went reasonably well, but it was downhill from there. Hole... See more
I bought this to put 4 bolt holes in mild steel - 20 gauge sheet, doubled, about 2 mm total depth. I used cutting oil and a hand held Makita 3/8ths drill (love that drill - 25+ years of service). The first hole went reasonably well, but it was downhill from there. Hole 4 was a miserable cycle of push and clean, push and clean. Also, the reduced diameter shaft is smooth - no flutes to make it easy on the jaws of the chuck. This would have been hopeless for drilling into stainless.

Bottom line - this drill bit is marginal for use in a drill press with cutting oil. Not recommended for hand held drills. I''ll keep it around for woodworking, but not metals.
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MrWizard
1.0 out of 5 starsVerified Purchase
Worthless Performance in Steel
Reviewed in the United States on November 25, 2017
Size: 1/2" x 6"Style: 1pc
This 1/2 inch "cobalt" bit could not make a dent in ordinary 1/4 inch steel. A 1/4 in pilot hole was drilled without difficulty with a Dewalt cobalt bit. After 20 minutes drilling with oil, giving the bit a rest for 1 minute every 5, the hole was less than 1/4 inch... See more
This 1/2 inch "cobalt" bit could not make a dent in ordinary 1/4 inch steel. A 1/4 in pilot hole was drilled without difficulty with a Dewalt cobalt bit. After 20 minutes drilling with oil, giving the bit a rest for 1 minute every 5, the hole was less than 1/4 inch at the top surface and had not even reached the bottom. I bought this over a Dewalt simply because of the much lower price since I only needed 4 holes. That was a mistake. I have nothing good to say about this Irwin bit.
7 people found this helpful
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James S.
5.0 out of 5 starsVerified Purchase
Good bit at a good price.
Reviewed in the United States on July 1, 2020
Size: 1/2" x 6"Style: 1pc
Some “mom & pop” hardware stores charge twice as much for this bit. If you know how to use it properly, this is a great bit. I drilled thru 2 galvanized steel brackets that were 3/16” thick. And it drilled the last hole just as easily as the first. But you’ve gotta use... See more
Some “mom & pop” hardware stores charge twice as much for this bit. If you know how to use it properly, this is a great bit. I drilled thru 2 galvanized steel brackets that were 3/16” thick. And it drilled the last hole just as easily as the first. But you’ve gotta use drilling fluid and “keep it wet” the entire time, that’s true with any bit. Lack of lubricant will cause heat buildup and damage or dull the bit.
One person found this helpful
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Michael
3.0 out of 5 starsVerified Purchase
1 out of 2 worked
Reviewed in the United States on October 19, 2020
Size: 3/8 inStyle: 6pc
I bought these specifically to drill through aluminum. Nothing else. The first bit went about 1/8" into the aluminum and broke. Not like a chip off the tip. The whole thing shattered. The second bit went the rest of the way through without a problem. Maybe it was a lemon... See more
I bought these specifically to drill through aluminum. Nothing else. The first bit went about 1/8" into the aluminum and broke. Not like a chip off the tip. The whole thing shattered. The second bit went the rest of the way through without a problem. Maybe it was a lemon and the rest are fine. I don''t know for sure, but right now I have to give these a three. If the rest turn out to be good, I''ll update my rating.
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James W. Russell
5.0 out of 5 starsVerified Purchase
Drilled through Stainless Steel like a hot knife through butter.
Reviewed in the United States on July 25, 2020
Size: 1/8 inStyle: 12pc
I tried multiple cobalt drill bits from Rigid and Milwaukee, but none put more than a subtle dent into the stainless. I bought the 12-pack because I figured I would need several to drill the three holes I needed. The first 1/8 bit bored through with ease and... See more
I tried multiple cobalt drill bits from Rigid and Milwaukee, but none put more than a subtle dent into the stainless.

I bought the 12-pack because I figured I would need several to drill the three holes I needed. The first 1/8 bit bored through with ease and allowed me to finish the job with an on-hand 5/32" bit.

These bits are the right answer when trying to drill stainless steel.

I am very pleased and will definitely buy these in different sizes when needed. This 12-pack will last me for years!
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YLO
3.0 out of 5 starsVerified Purchase
Failed miserably in hanging TV with it - it did not penetrate metal studs with a Bosch 12v drill
Reviewed in the United States on December 29, 2020
Size: 1/2" x 6"Style: 1pc
The drill bit seemed to skid inside the drill because it doesn’t have a hex shank. After tightening it several times it was still not able to penetrate the thin stud side wall. I was able to penetrate easily with even a brad point wood drill, and also with my thickest black... See more
The drill bit seemed to skid inside the drill because it doesn’t have a hex shank. After tightening it several times it was still not able to penetrate the thin stud side wall. I was able to penetrate easily with even a brad point wood drill, and also with my thickest black oxidized OEM drill bit (7/16 IINM) but not with this one unfortunately :((
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Top reviews from other countries

carl
1.0 out of 5 starsVerified Purchase
No worth it
Reviewed in Canada on August 22, 2019
Broke it on the second hole...it was not even drilling straight, i then finished my work with a cheap drill bit from any hardware store and over 50 holes without an issue...bad experience with this expensive product, I’m very disappointed and i don’t recommend it to no one
One person found this helpful
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Amazon Customer
4.0 out of 5 starsVerified Purchase
A basic HSS bright finish drill
Reviewed in Canada on June 9, 2020
A basic HSS bright finish drill
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Ian
5.0 out of 5 starsVerified Purchase
Best deal ever and the bits themselves are fabulous
Reviewed in Canada on October 23, 2016
Best deal ever and the bits themselves are fabulous. Drilling stainless and theey last and last. Same day delivery saved me a trip to the supply store of at least an hour and they arrived actrually the same day. Highly recommended.
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Monarch 56
3.0 out of 5 starsVerified Purchase
they do the job
Reviewed in Canada on August 19, 2020
worked for the job at hand
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BreG
5.0 out of 5 starsVerified Purchase
They work and were a good price
Reviewed in Canada on February 12, 2016
Not too sure what to say here. They work like they should and they have not broke on me.
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2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online

2021 IRWIN online Jobber discount Drill Bit, Cobalt, 1/8-Inch, 135-Degree, 12-Pack (63108) online