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Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), DWDCO Series

4.5 4.5 out of 5 stars 966 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Screwdriver Bit Sets by Drill America

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Bit Set
Cobalt Drill Bit Set

Purchase options and add-ons

Material Cobalt
Finish Type Gold Oxide
Shank Type Round
Cutting Angle String 135 Degrees
Brand Drill America

About this item

  • Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
  • Gold oxide finish lubricates the drill bit and provides wear resistance
  • Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
  • Meets ANSI specifications

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 6.57 x 3.5 x 3.31 inches; 2.2 Pounds
  • Item model number ‏ : ‎ DWD29J-CO-PC
  • Date First Available ‏ : ‎ October 22, 2013
  • Manufacturer ‏ : ‎ Drill America
  • ASIN ‏ : ‎ B00FXGOMIW
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.5 4.5 out of 5 stars 966 ratings

Product Description

The Drill America DWD29J-CO-PC Qualtech jobber length drill bit set contains 29 cobalt steel drill bits with gold oxide finish in inch sizes 1/16" to 1/2" (1/64" increments). A self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. A gold oxide finish acts as a lubricant and provides wear resistance, and the round shank accommodates most drill chucks. The set comes in a plastic index case with labeled compartments for identification and organization. Drill bits conform to American National Standards Institute (ANSI) standards.

Drill bits are cutting tools used to make holes in a range of materials using machines such as handheld portable drills, machining centers, and lathes. Drill bits come in a variety of lengths and types, the most common of which is the twist drill bit. The round, twisted shaft of the twist drill bit typically has two cutting edges and flutes. The helical twist of the flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. Jobber length twist drill bits, the most common length of twist drill bit, offer a good compromise of length and reach to work with the widest range of materials and applications. Mechanic's length twist drill bits (also called maintenance length) are a little shorter than jobber length and less prone to deflection when drilling. Short length twist drill bits (also called stub or screw-machine length) are the shortest and stiffest twist drill bits, helping to reduce the chance of deflection or breakage when drilling. Reduced shank drill bits (also called Silver and Deming drill bits) have a shank that is smaller in diameter than its shaft, permitting drilling machines with either a 1/2" or 3/4" drill chuck to create large holes. Long length twist drill bits (also called taper length) are a little longer than jobber length, allowing for deeper holes and longer reach. Extra long twist drill bits (also called extension) are longer than long length twist drill bits for greater reach or for drilling deeper holes.

Drill America manufactures cutting tools such as drill bits, taps, dies, counterbores, countersinks, end mills, and reamers. The company, founded in 1927, is headquartered in Miami, FL.

What's in the Box?

  • (29) drill bits, sizes 1/16" to 1/2" in 1/64" increments
  • (1) plastic case


From the manufacturer

Drill America 29 Piece Drill Set in Rust Resistant, Water and Shatter Proof Round Case

Fits Anywhere You Need It

All The Bits You Need

29 Piece Sets includes fractional sizes from 1/16" to 1/2" by 1/64" increments.

Hang for Quick Access

When all hands are on deck, hang the drill index on your belt whether you're in the shop or field.

Easy to Handle Plastic Case

Unique round drill index combines form and function into one beautifully designed, easy to carry drill set.

Fits Anywhere You Need It

Effortlessly grip the set in one hand as you would a travel coffee mug or leave it in the cup holder of your truck while on the way to a job.

Cobalt Drill Bit

Drill America Cobalt Drills

Drill America Cobalt Drills are are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium.

Split Point Tip

135 Degree Split Point Tip

Drill America Cobalt Drill Bits have a 135 degree split point tip for self-centering and reducing thrust. Compared to a conventional 118 degree tip, these drills wont go "walking" on you.

KFD Set m35 Cobalt m42 Cobalt Drill Set
KFD Black and Gold Drill Set m35 Cobalt Drill Set m42 Cobalt Drill Set
Customer Reviews
4.6 out of 5 stars
1,189
4.5 out of 5 stars
966
4.3 out of 5 stars
349
29 Piece Drill Set
Sizes 1/16” - 1/2"
Rust Resistant, Water and Shatter Proof Round Case
Material m2 High Speed Steel m35 Cobalt m42 Cobalt
Drill Bit Description KFD Killer Force Drill Bits are manufactured from M2 premium grade high speed steel. For use in a wide range of materials in the iron and steel families such aluminum, iron, stainless steel and other hard metal drilling. Drill America Cobalt Drills are are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium. Made of m35 cobalt. Drill America Cobalt Drills are are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium. Made of m42 cobalt.
Finish Black and Gold Gold Oxide Gold Oxide
135 Degree Split Point Tip
Drill America

What's in the box

  • Drills: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64",
  • Looking for specific info?

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    966 global ratings

    Customers say

    Customers like the case of the drill bits. They say it's a good storage case. They like that the drills work well in most normal drilling applications. They also say the bits are super sharp and cut through mild steel like butter. Customers are satisfied with quality. However, some customers have reported that the bits get dull after the first use. Customers have different opinions on readability.

    AI-generated from the text of customer reviews

    133 customers mention100 positive33 negative

    Customers like the quality of the drill bits. They say they're very strong, sharp, durable, and can cut through high strength steel like butter. Customers also say the bits prove their worth time after time, and that they'll last a while. They also say that the bits are made of cobalt, which gives them their hardness rather than a coating. Overall, customers are satisfied with the quality and performance of the bits.

    "Good bits. Not the best on the market but did the job drilling Metal just fine. Drilled about 80 holes in 1/4 inch steel with 5/16 bit...." Read more

    "...The bits easily cut through most metals with no lost in sharpness...." Read more

    "Great product very sharp good quality would buy again" Read more

    "Good quality." Read more

    37 customers mention32 positive5 negative

    Customers like the sharpness of the drill bits. They say they are super sharp, cut through mild steel like butter, and can be re-sharpened.

    "...Had to sharpen the bit but it sharpened well and went right back to work. I had been buying Name brand, Dewalt and Irwin etc...at home depot...." Read more

    "...The bits easily cut through most metals with no lost in sharpness...." Read more

    "I have nothing negative to say about these drill bits. Nice and sharp. They hold their edge. They are straight. Should last me a long time." Read more

    "...These bits cut through steel like butter on the very first drill to tha last. The 12th hole was just as easy as the 1st...." Read more

    36 customers mention31 positive5 negative

    Customers like the value of the drill bits. They say it's a great purchase, and well worth the money.

    "...I don't know where these are made but they are pretty good quality for the money." Read more

    "Great value. I use these often enough. Super durable...." Read more

    "Very good product" Read more

    "...issues are foregivable in my opinion both because of the low cost of the bits, and because the key benefits of cobalt bits is that they derive their..." Read more

    28 customers mention28 positive0 negative

    Customers are satisfied with the performance of the drill bits. They mention that they work well in most normal drilling applications, are durable, and are capable of doing the job. Some say that the bits make life easier and work well on stainless steel and mild steel.

    "...Had to sharpen the bit but it sharpened well and went right back to work. I had been buying Name brand, Dewalt and Irwin etc...at home depot...." Read more

    "These bits seem to work well in mild steel... I'm running them in a Bridgeport with a Jacobs chuck and using flood coolant at a reasonable RPM to..." Read more

    "...These work best in the drill press because if used at a higher speed they break like butter...." Read more

    "...out a few more on metal. So far they seem to perform well." Read more

    11 customers mention11 positive0 negative

    Customers like the case of the drill bits. They mention it's a practical and sturdy storage case. Some say that the drills work well and the case is fine.

    "...They seem to keep going if used properly. No complaints and the case is fine." Read more

    "Good storage case. Drills are good quality" Read more

    "This is a very nice kit, many sizes, the bits I've used thus-far are nice and sharp...." Read more

    "...It does a great job and has a nice carrying case. The only problem I have is with the case, the lid no longer tightens on the case...." Read more

    11 customers mention7 positive4 negative

    Customers are mixed about the readability of the drill bits. Some mention that it's true to size, has an excellent size selection for various jobs, and takes up little space. However, others say that the raised black numbers are very difficult to read, and the etching on the sizes is hard to read.

    "Excellent size selection for various jobs, time saving to have" Read more

    "...but the black plastic with slightly raised black numbers is very difficult to read. Have to turn them into the light just right in order to do so...." Read more

    "The set is very accurate in size and the bits can cut...." Read more

    "...The holder case is water proof and tight. Made in America bits!" Read more

    7 customers mention0 positive7 negative

    Customers are dissatisfied with the noise of the drill bits. They mention that the other drills work but get dull after the first use. The 7/16" bit starts burning and dulls pretty quickly.

    "...Most of the other drills work- but get dull after the first use.73.00....wow, cheaper to buy Harbor Freight a few times." Read more

    "...the 3/16", 3/8" and 7/16" bit start burning and dulling pretty quickly (the first two more so than the last one)...." Read more

    "...They were dull. Yes, I used cutting oil. I was disappointed as I used the Dewalt $14 dollar set to complete the job— they worked better...." Read more

    "...taking care to control speed and pressure (and lubricate) they dull extremely fast and are very very brittle. Look at one wrong and it will snap." Read more

    7 customers mention0 positive7 negative

    Customers are disappointed with the versatility of the drill bits. They say that they are not up to the task, not good for a shop, and not for everyday use.

    "Good bits. Not the best on the market but did the job drilling Metal just fine. Drilled about 80 holes in 1/4 inch steel with 5/16 bit...." Read more

    "...Not so good for a shop." Read more

    "...however after 3 or 4 times using bit they dulled too bad and now are useless...." Read more

    "...I have only used them for making holes in wood , and they were not up to the task. Better quality bits are made by Hanson or Irwin." Read more

    Well- you might get one good use out of it- one time only
    3 Stars
    Well- you might get one good use out of it- one time only
    The 9/64ths didn't make it as a pilot hole drill...LOL....Most of the other drills work- but get dull after the first use.73.00....wow, cheaper to buy Harbor Freight a few times.
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    Top reviews from the United States

    Reviewed in the United States on March 18, 2024
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    Reviewed in the United States on March 19, 2024
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    Reviewed in the United States on October 17, 2023
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    Reviewed in the United States on April 1, 2023
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    Top reviews from other countries

    brian
    5.0 out of 5 stars Great bit set.
    Reviewed in Canada on February 14, 2024
    Pattern Name: Bit SetStyle: Cobalt Drill Bit SetVerified Purchase
    sudhakar nath mishra
    4.0 out of 5 stars Nice
    Reviewed in India on October 14, 2018
    Pattern Name: Bit SetStyle: Cobalt Drill Bit SetVerified Purchase
    Tom Sawyer
    5.0 out of 5 stars Best drill bits I have ever bought
    Reviewed in Canada on September 23, 2022
    Pattern Name: Bit SetStyle: Cobalt Drill Bit SetVerified Purchase
    Cliff
    5.0 out of 5 stars Don't bother Looking any further for other drill bits. Get these.
    Reviewed in Canada on February 8, 2021
    Pattern Name: Bit SetStyle: Cobalt Drill Bit SetVerified Purchase
    Steven Meldrum
    4.0 out of 5 stars Decent. So far they work well. Stickers on ...
    Reviewed in Canada on January 11, 2018
    Pattern Name: Bit SetStyle: Cobalt Drill Bit SetVerified Purchase