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GMTOOLS

GMTOOLS 29Pcs Cobalt Drill Bits Set, M35 High Speed Steel, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Indexed Storage Case 1/16"-1/2"

    • Based on 940 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 18
Order within 20 hours and 20 minutes
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Style: 29 pcs Cobalt


Features

  • Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable of tool holding systems and tightly clamped
  • 135 Split Point & Twist Design: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with sharp and durable cutting edge. Twist design for clear chips faster
  • Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade 6542 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set
  • Set Includes: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 and 1/2 inch bits; Comes in metal indexed storage case for easy storage
  • QUALITY COMMITMENT: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!

Material: Cobalt Steel


Finish Type: Titanium


Shank Type: Straight


Cutting Angle String: 135 Degrees Degrees


Brand: GMTOOLS


Package Dimensions ‏ : ‎ 7.76 x 4.72 x 2.32 inches; 3.24 Pounds


Item model number ‏ : ‎ Cobalt Twist Drill Bit


Date First Available ‏ : ‎ July 5, 2022


Manufacturer ‏ : ‎ GMTOOLS


Best Sellers Rank: #4,340 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #11 in Jobber Drill Bits


#11 in Jobber Drill Bits:


Customer Reviews: 4.4 4.4 out of 5 stars 940 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Serious bits. WINNER vs 5 other brands.
Style: M35-5/16-10pcs
I’m repairing and upgrading a utility trailer, I was going to have to drill 40+ holes through single/double layered 1/4” steel. I decided to buy several different brands of drill bits for comparison. I started with my favorite brand Dewalt, then ACE, Bosch, Irwin, Stinger, and finally GMTools. ACE failed, I drilled through 1.5” of wood, reached 1/4” steel and it broke. One of my DeWalt’s same result. B/I/S bits took 3-6 minutes to penetrate with oil and pilot holes. Frustrated, I ordered the these GM bits. Killers, eat steel! 3x faster than any other bits. You need holes these WILL make holes for you. ... show more
Reviewed in the United States on September 25, 2023 by Bruno
    • Don't hold an edge very long.
Style: M35-3/16-10pcs
It is a good deal to get a bunch of bits, but it is a good thing there is a bunch, because they don't hold an edge very long. I am still glad that I bought them.
Reviewed in the United States on October 7, 2023 by robby tharp
    • not that good
Style: 29 pcs Cobalt
they most likely good for thin metal ,heavy 1/8 and up,,they not that good bits are made out of weak metal,dull quickly
Reviewed in the United States on October 13, 2023 by steven oliver
    • Works for cast iron
Style: 29 pcs Black Gold
I used it to install rails on my truck and it had cast iron welded onto it so I needed something to cut through and this did the job.
Reviewed in the United States on October 5, 2023 by Abraham S.
    • Amazing
Style: M35-3/16-10pcs
These bit save me a tone load of money, not sure when I will buy anymore because they are that good
Reviewed in the United States on October 17, 2023 by Robert Sculley
    • What I needed to drill through metal
Style: 29 pcs Black Gold
If you are drilling through tough metal this is what you need. Greatly outperform my titanitum drill bits. I am sorry I waited so long to buy a good set of all purpose drill bits in a nice case.
Reviewed in the United States on October 3, 2023 by Publius
    • A sharp tough drill but set that stays sharp
Style: 29 pcs Cobalt
I bought this set after acquiring a precision drill press. The toughness and ability to drill through some of the tougher steels impressed me. Some knife steels can't eat drill bits up. Not these.
Reviewed in the United States on October 5, 2023 by UpState NYer
    • Cuts through metal well
Style: 13 pcs Cobalt
I like the size of the case and how easy it was to cut through metal. I had to drill holes in a gun safe, which I was able to do with these drill bits.
Reviewed in the United States on September 26, 2023 by Luke Fritz

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