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BOSCH CO2159B 1/2 In. x 6... has been added to your Cart

BOSCH CO2159B 1/2 In. x 6 In. Cobalt M42 Drill Bit

4.7 out of 5 stars 1,802 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Jobber Drill Bits by BOSCH

List Price: $41.28 Details
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You Save: $29.29 (71%)
1/2 In. X 6 In.

Enhance your purchase

Material Cobalt
Shank Type 3-Flat
Brand BOSCH
Tool Flute Type Spiral

About this item

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  • Cobalt M42 drill bit – 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
See more product details
New (2) from $11.99 FREE Shipping on orders over $25.00 shipped by Amazon.

Frequently bought together

  • BOSCH CO2159B 1/2 In. x 6 In. Cobalt M42 Drill Bit
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  • Drill America - KFDRSD9/16 9/16" Reduced Shank High Speed Steel Black & Gold KFD Drill Bit with 1/2" Shank, KFD Series
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WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

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From the manufacturer

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Customer Rating 4.7 out of 5 stars (1802) 4.7 out of 5 stars (1121) 4.7 out of 5 stars (646) 4.5 out of 5 stars (89) 4.5 out of 5 stars (1610) 4.5 out of 5 stars (182)
Price $11.99 $11.38 $3.80 $10.98 $9.93 $16.29
Shipping FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
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Material Cobalt Cobalt Cobalt Cobalt High-Speed Steel Cobalt

Product description

Size:1/2 In. X 6 In.

BOSCH Cobalt M42 metal drill bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core Cobalt bits deliver 10x life vs. Standard bits, are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability. Bits that are 1/8 in. And larger feature a split point; bits 3/16 in. And larger feature a three-flat shank, for better bit grip. These Cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron, titanium and other hard or abrasive metals.

Product information

Size:1/2 In. X 6 In.

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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,802 global ratings
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Top reviews from the United States

Reviewed in the United States on December 4, 2019
Size: 14 pc. Drill Bit SetVerified Purchase
26 people found this helpful
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Reviewed in the United States on July 7, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
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1.0 out of 5 stars Defective product
By Julio C. Da Silva on July 7, 2020
I had a hard time deciding on which brand of bits to choose, until I decided on BOSH, they seemed to me to be of good quality, but upon receiving it I quickly realized that the small bits did not have enough tip, they looked flat, when trying to drill they slide in metal. The big bits do not seem to be centered, when I drill the metal it does it in the shape of a triangle as you can see in the photo. They look good quality but it seems that I touched a defective lot, I would like to receive other bits in good condition and a response from Bosch.
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14 people found this helpful
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Reviewed in the United States on May 18, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
12 people found this helpful
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Reviewed in the United States on November 2, 2019
Size: 14 pc. Drill Bit SetVerified Purchase
11 people found this helpful
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Reviewed in the United States on January 8, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
11 people found this helpful
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Reviewed in the United States on October 22, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
4 people found this helpful
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Reviewed in the United States on November 6, 2019
Size: 14 pc. Drill Bit SetVerified Purchase
6 people found this helpful
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Reviewed in the United States on October 21, 2020
Size: 3/8 In. X 5 In.Verified Purchase
3 people found this helpful
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Top reviews from other countries

angeleyes
5.0 out of 5 stars Best drill set to remove damaged or broken hardened steel bolts
Reviewed in Canada on January 2, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
Customer image
5.0 out of 5 stars Best drill set to remove damaged or broken hardened steel bolts
Reviewed in Canada on January 2, 2020
This drill set saved the day. My wife’s BMW had a wheel lock bolt that was over torqued and when tried to remove , the tip of lug key broke and jammed in the head . I used a couple of wheel stud extracting tools to no avail. The BMW wheel stud keys are round and hardened steel making the job difficult. I tried drilling with HSS drill bits which were useless. After doing some research on drill bits I chose this drill set because of the hardened quality Cobalt M42 and affordable price. The ultimate hardened drills are carbide and not suitable for hand drilling as they are brittle and will break. These cobalt grade M42 drills drilled slowly through the stud head like butter. Started with 3/16” then 1/4” and finished with 1/2”. If it doesn’t say M42 Cobalt grade Don’t waste your money on anything else.
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2 people found this helpful
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Audios
2.0 out of 5 stars Wouldn't put a scratch on a masonry nail head
Reviewed in Canada on June 10, 2020
Size: 14 pc. Drill Bit SetVerified Purchase
maximino.cardenas@pmicim.com
5.0 out of 5 stars Excelentes
Reviewed in Mexico on April 7, 2021
Size: 1/8 In. X 2-3/4 In.Verified Purchase
One person found this helpful
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Kindle Customer
5.0 out of 5 stars IT'S COBALT
Reviewed in Canada on July 31, 2020
Size: 5/16 In. X 4-1/2 In.Verified Purchase
Doc85
4.0 out of 5 stars These bits are brittle
Reviewed in Canada on January 29, 2021
Size: 21 pc. Drill Bit SetVerified Purchase