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GMTOOLS

GMTOOLS 29Pcs Cobalt Drill Bit Set, 135 Degree Tip High Speed Steel with Black and Gold Finish, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case 1/16"-1/2"

  • Based on 1,084 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jun 20
Order within 21 hours and 38 minutes
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Style: 29 pcs Black Gold


Features

  • High Quality Material: The combination of high-speed steel black and gold oxide finish increases drill bit's corrosion resistance and wear resistance.
  • 135Split Point: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, fully ground drill bit with sharp and durable cutting edge. Twist design for bring metal shavings up and out of the hole drill.
  • 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;Storage in a metal indexed case.
  • 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: Carbide, High Speed Steel, Stainless Steel, Cobalt


Finish Type: Gold Oxide


Shank Type: Straight


Cutting Angle String: 135 Degrees


Brand: GMTOOLS


Package Dimensions ‏ : ‎ 7.72 x 4.57 x 2.32 inches; 3.33 Pounds


Item model number ‏ : ‎ 29PCS


Date First Available ‏ : ‎ November 14, 2022


Manufacturer ‏ : ‎ GMTOOLS


Country of Origin ‏ : ‎ China


Best Sellers Rank: #6,049 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #15 in Jobber Drill Bits


#15 in Jobber Drill Bits:


Customer Reviews: 4.4 4.4 out of 5 stars 1,084 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jun 20

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.

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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
    • Decent, still through steel, creates heat had to let cool unlike my Milwaukee
Style: 13 pcs Cobalt
Pretty great, Decent, cuts through 2 inches of steel to make a steel ferrule for a brake cable, creates heat so had to let cool unlike my Milwaukee set But for 1/4 1/5 the price not bad. Was missing the size from my Milwaukee set I needed for the final diameter so I gave these a try
Reviewed in the United States on October 31, 2023 by CHRISTOPHER G.
    • Great for aluminum and brass, OK for steel
Style: 115 pcs Cobalt
Broke a smaller bit drilling through steel but that was probably my fault. These work great for aluminum and OK on tool steel. Hardened steel will dull these in seconds. Good for a beginner machinist, and cheap enough that it's not the end of the world if you break something.
Reviewed in the United States on November 15, 2023 by Cal
    • Have a good edge and hold up
Style: M35-3/16-10pcs
Drills very good, drilling through wood into metal
Reviewed in the United States on December 28, 2023 by Mark
    • Good bits
Style: 29 pcs Cobalt
I drill a lot of steel, both mild and hardened steel. So far these are holding up very well.
Reviewed in the United States on December 22, 2023 by Ty Osburn
    • Cut Above the Rest!
Style: 29 pcs Black Gold
Cut through steel & sheet metal easily and quickly, and remained sharp. Great purchase!
Reviewed in the United States on December 22, 2023 by Snoozer
    • Drill bit set
Style: 115 pcs Cobalt
This was a Christmas gift. My son is a mechanic and was quite pleased to have a case with all bits in place.
Reviewed in the United States on January 1, 2024 by nickie h
    • Got the job done ….. but
Style: M35-5/16-10pcs
Review Image by Kindle Customer Kindle Customer
I needed to drill 3 holes through a 3/8” stainless anchor roller on a boat. Used 1/2” drill at 1000 rpm with continuous oil drip to remove chips. Needed 5 of these bits to get job done. Had previously tried Bosch HSS bits for metal as well as titanium nitride bit which didn’t work. Bit quality control was lacking - one of the bits arrived with a chip in shank. In another case the bit’s tip chipped during use. As I said at the beginning it ultimately got the job done when other bits failed. ... show more
Reviewed in the United States on October 29, 2023 by Kindle Customer Kindle Customer

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