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DEWALT

DEWALT Step Drill Bit Set:3 Piece, Titanium Nitride Coated, 31 Hole Sizes, 1/8 in to 7/8 in, 1/4 in Shank Hex Size (DWA1790IR)

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Availability: Only 9 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 24
Order within 19 hours and 11 minutes
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Style: 3 PC Set


Features

  • Titanium Nitride Coated two flute spiral design provides longer life and better chip removal for the DEWALT drill bit set
  • Split point tip of the drill bit increases speed
  • Laser engraved numbers increases step visiblity
  • 1/4-inch hex shank
  • Optimized for impact driver usage

Description

The DEWALT Metal Drill Bit Set features 3 innovative titanium step drill bits to power through a range of applications. Each drill bit is equipped with a split-point tip that helps to increase speed and starts on contact. An innovative double-spiral flute design delivers long life and outstanding chip removal. Laser-engraved numbers helps to increase step visibility. Optimized for impact drivers. Works with rotary drills.

Material: Titanium Nitride Coated


Cutting Diameter: 6.5 millimeters Millimeters


Finish Type: Titanium Nitride


Shank Type: Hex


Cutting Angle String: 135 Degrees


Material: ‎Titanium Nitride Coated


Cutting Diameter: ‎6.5 millimeters Millimeters


Finish Type: ‎Titanium Nitride


Shank Type: ‎Hex


Cutting Angle String: ‎135 Degrees


Brand: ‎DEWALT


Item dimensions L x W x H: ‎6 x 5 x 0.88 inches


Tool Flute Type: ‎Spiral


Point Style: ‎Split Point


Surface Recommendation: ‎Door,Metal,Steel


Number of Flutes: ‎2


UPC: ‎885911294102


Set Name: ‎3-Piece


Unit Count: ‎1.0 Count


Global Trade Identification Number: ‎02


Manufacturer: ‎DeWalt


Number of Pieces: ‎1


Part Number: ‎DWA1790IR


Item Weight: ‎5 ounces


Product Dimensions: ‎6 x 5 x 0.88 inches


Item model number: ‎DWA1790IR


Is Discontinued By Manufacturer: ‎No


Size: ‎6.5 millimeters


Style: ‎3 PC Set


Finish: ‎Titanium Nitride


Power Source: ‎Hand_powered


Item Package Quantity: ‎1


Measurement System: ‎Inch


Included Components: ‎DWA1790IR - 3 Piece Impact Ready Step Drill Bit Set with multiple sizes (1/8"-1/2", 3/16"-1/2", and 3/16"-7/8")


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: August 21, 2012


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 24

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

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great quality
Best drill bits money can buy. I’ve researched lots of brands and these are truly the best. Goes through 3/8” metal with a pilot hole and lubricant with ease. They’re very sharp and clean cutting and make quick work of metal projects
Reviewed in the United States on September 23, 2025 by Adam D Stavros
    • A Reliable and Durable Drill Bit Set
The DEWALT Drill Bit Set with titanium nitride coating is a reliable and durable set for any drilling job. The set includes three pieces with sizes ranging from 1/8 inch to 1/2 inch, allowing for versatility in drilling applications. The titanium nitride coating on each bit provides a longer life and better chip removal than other drill bit sets, making it a great choice for both professional and DIY projects. The 135-degree split point design also ensures precise and accurate drilling without the need for a pilot hole. The bits are constructed with heavy-duty materials, ensuring they can withstand the toughest drilling tasks. They are also compatible with a wide range of drilling tools, including cordless drills and impact drivers. Overall, the DEWALT Drill Bit Set is a solid investment for anyone who needs reliable and durable drill bits that can handle a variety of drilling applications. ... show more
Reviewed in the United States on March 12, 2023 by Mike S.
    • Great kit
I believe the value for money in this kit is clear as there isn't the need to purchase multiple drill bits to work with. I can't say how durable it is but considering that I've used one bit to drill over 40 holes in different metal thickness, I believe it should be able to get to 100 and still be drilling holes in metal smoothly. ... show more
Reviewed in the United States on October 5, 2023 by E. Edwards
    • Totally worth it
I finally broke down and spent a little more on a set of step drills, glad I did. These cut until the cows come home. I drilled about a hundred holes in a barrel building a smokeless fire pit and it was crazy fast and the drill bit is still like new. Very happy with the quality and performance and will be buying a set for my dad as well. ... show more
Reviewed in the United States on January 8, 2022 by Chris D Starkey
    • Handy drill bits
Works well and worth the money
Reviewed in the United States on July 26, 2025 by Bill
    • Nice holes
A sharp step drill is the hardest thing to find. These are nice step drills that are very sharp and make nice round holes. Kinda expensive but if you want something that will last, pay the extra money. I've had these for about 6 months.
Reviewed in the United States on November 27, 2022 by E W
    • Best bits I've ever used
Drilled 22 1/2" holes in my Teske trailer. Still like brand new. Starts like a quality bit then zips right thru to the hole size. Went so fast with the hole I went past the 1/2" mark.
Reviewed in the United States on June 21, 2024 by Randy Knight
    • Best step bits
These hold up much better than Milwaukee or other bits. I primarily use them on 1/8" mild steel. I know they aren't rated for that thick but they work great. Drilled some 5/8" holes in 1/4" steel and there's no detectable wear or damage after 12 holes.
Reviewed in the United States on May 30, 2023 by Codpac

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