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GMTOOLS

115Pcs Cobalt Drill Bits Set, M35 High Speed Steel, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Plastic and Wood with Metal Indexed Storage Case, 1/16"-1/2"

    • Based on 1,725 reviews
Condition: New
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Dec 26
Order within 21 hours and 51 minutes
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Style: 115 pcs Cobalt


Features

  • 115 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing
  • 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
  • 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 ‏ : ‎ 15.51 x 6.26 x 4.09 inches; 7.21 Pounds


Date First Available ‏ : ‎ July 5, 2022


Manufacturer ‏ : ‎ GMTOOLS


Best Sellers Rank: #7,499 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 1,725 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Dec 26

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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Top Amazon Reviews

    • Deserves 6 stars
Style: 115 pcs Cobalt
These drill bits are sharp, precision ground, and high quality. I bought this because I wanted a comprehensive set for drilling prior to tapping; I was expecting to get mid-tier quality bits. I was pleasantly surprised at the quality of the bits! I wish the case was slightly larger, and the setup allowed the bits to more easily be removed from the case - however, it's very compact and still fully-functional. Great set. ... show more
Reviewed in the United States on October 3, 2024 by Richard
    • So far so good
Style: 29 pcs Black Gold
They have been working well for me so far drilling through all sorts of steel and aluminum. Nice and sharp with a good coating of oil. Time will tell but so far so good.
Reviewed in the United States on October 15, 2024 by Kam Leang
    • I’m undecided
Style: 15 pcs Cobalt
This drill set has bit sizes from 1/16th thru 3/8ths. It has a nice storage case. The bits are well thought out because it has two 1/16ths, 3/32nds, and 1/8ths. I used a 1/16th without any problems. Then broke a 3/32 trying to enlarge the same hole. The bit snapped and flew across my work area. So definitely wear safety glasses. It didn’t land near me and I didn’t see it in motion either. I don’t think it should have broken at all but I’m not a tool expert. These are cobalt bits. I’ve never broken any others like steel, masonry, or titanium-dipped. Also, I was using a drill driver not a hammer or impact drill. Maybe that broken bit was defective. So 4-stars! ... show more
Reviewed in the United States on February 28, 2024 by Su Doki
    • High quality drill bits at a great price
Style: 29 pcs Cobalt
Storage case does not easily facilitate drill bit removal if you have large fingers
Reviewed in the United States on September 27, 2024 by Glenn B.
    • Drills hard steel easily
Style: M35-3/16-10pcs
I was drilling some 3/16" holes in some scrap steel and my bits, several different brands, would only drill 2 or 3 holes before giving up. I tried my bits on other steel and they worked fine. I am not sure what the type of steel I am trying to drill is but I had put a lot of fabrication effort into it so I wanted to make it work. These bits are pretty cheap so I wasn't sure about buying them but they worked great , buzzed right through just like it was ordinary steel .I only used one bit to drill all the rest of the holes, I haven't tried it on stainless yet but I am impressed so far ... show more
Reviewed in the United States on June 10, 2024 by L Smith
    • Great so far
Style: 29 pcs Cobalt
Used the 1/8, 5/16, and 1/4 drill bit sizes all weekend drilling through red iron finishing my shop. Some of the metal was 1/16" thick, some maybe a little more or a little less. The 3 drill bits held up well and cut great. I was dipping them in cutting wax(drill bit wax) before starting a new hole. Always use a cutting wax or spray oil if you want your bits to last. Where I'm from, Tap Magic spray oil works great. I like the wax better. We have expensive bits that we use at work. I can't tell much of a difference so far. Haven't used any of the larger sizes. ... show more
Reviewed in the United States on October 9, 2024 by CJM515
    • They hold an edge longer.
Style: M35-1/8-10pcs
I was buying the Milwaukee 15X brand and these are every bit as good if not better for a lot less, will buy again.
Reviewed in the United States on November 4, 2024 by Brian Williams
    • Defective when sent
Style: 29 pcs Black Gold
The storage metal box forr the bits came damaged (left side was missing a revit . Also the set was missing 2 bits.
Reviewed in the United States on August 30, 2024 by ronald w cogdill

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