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NEIKO

NEIKO 10181A Step Drill Bit Set, 3 Piece, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jun 27
Order within 10 hours and 24 minutes
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Style: Spiral


Pattern Name: 1/8 to 7/8", 3 bits


Size: 1/4" Quick Change Hex


Features

  • PREMIUM STEP BIT: Each unibit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal.
  • STEP DRILL BIT FOR METAL: With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore, drilling holes in metal is fast, efficient, and clean.
  • SPIRAL DESIGN: The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 31 step sizes, each hole made with these step bits will be precise.
  • QUICK-CHANGE: The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools.
  • INCLUDES: Each bit set comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch).

Description

Each step drill bit manufactured by NEIKO comes with precision manufacturing and is built with high-grade high-speed steel. Our step bits, or known as unibits, come with a titanium coating that promote the strength and cutting power of each of these drill bits. In this 3 piece set, you get a total of 31 step sizes to create clean holes in metals, plastic and wood. The spiral grooved design deburrs faster and gives you clean cuts every time. Each bit set is engineered for faster drilling and you can have confidence in knowing you will get the job done with accuracy and efficiency with bits that truly perform. Need a center punch to start your hole drilling? Be sure to check out the 02638A 5" Center Punch and the 02639A 6" Center Punch.

Material: 1/4" Quick Change Hex


Finish Type: Titanium


Shank Type: Hex


Cutting Angle String: 135 Degrees


Brand: NEIKO


Brand Name: NEIKO


Model: 10181A


UPC: 816914021617


Set Name: 3-Piece Spiral Grooved Step Drill Bit Set


Unit Count: 1.0 Count


Global Trade Identification Number: 17


Manufacturer: Neiko


Part Number: 43219-22909


Number of Pieces: 3


Item Weight: 0.26 Pounds


Item Type Name: Quick Change HSS Titanium Coated Spiral Grooved Step Drill Bit 3-Piece Set | 31 Step Sizes in One Kit


Included Components: Grooved step drill bits


Item Dimensions: 6 x 3.5 x 0.75 inches


Minimum Bore Diameter: 0.75 Inches


Material Type: 1/4" Quick Change Hex


Finish Types: Titanium


Shank Type: Hex


Surface Recommendation: Stainless,Wood,Aluminum,Stainless Steel,Copper,Plastic,Metal,Steel


Cutting Angle String: 135 Degrees


Tool Flute Type: Spiral


Point Style: Split Point


Number of Flutes: 2


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 27

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

    • Good set for a reasonable cost
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 1-3/8", 5 bits
This set provides everything most people would need. It’s a good value for what you get. I’ll update this if I can once I know how they last however, I am happy with the purchase.
Reviewed in the United States on February 16, 2026 by RAH
    • 10/10 holes.
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 1-3/8", 5 bits
Deeeeez boys CUT. Look for the price, nothing is beating the quality. Sure go with a bigger brand name, but you could buy this set 3 times before you’d clear the value of a different brand.
Reviewed in the United States on February 3, 2026 by Maddog The Electrician
    • All great until….
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 1-3/8", 5 bits
The shipping was fast, as expected a nice and shiny set of hole makers. I put them to the test come the next work day. Sharp and durable (if used in the right way). All great until you find the tip of the smallest bit broke off. Not sure when and where but to my dismay one bit was no longer useable. I would recommend this set for light to medium light work. ... show more
Reviewed in the United States on April 23, 2022 by carlos gutierrez
    • Works great
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 7/8", 3 bits
Perfect size holes
Reviewed in the United States on January 11, 2026 by steve neville
    • Spiral step Bits
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 7/8", 3 bits
Spiral step bit drill fast and last lt
Reviewed in the United States on February 20, 2026 by Thomas Kuczer Jr
    • You Get What You Pay For
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 1-3/8", 5 bits
These bits technically are functional as advertised, but they definitely don't even come close to the legit name brands. If you're working with wood, plastic, or a soft metal these are perfectly fine. but if you're working with 1/8 inch steel or thicker, these things will try to break your arm. The metal comes off as tiny chips instead of little curly spirals, that should tell you everything. I only used the smallest bit to test out, and it was not pleasant. There's no way I'd use one of the wider bits with the metal I'm drilling. You'd probably break your arm or your drill with a powerful enough tool. ... show more
Reviewed in the United States on March 7, 2024 by Amazon Customer
    • Works for me
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/8 to 7/8", 3 bits
exactly as advertised
Reviewed in the United States on March 4, 2026 by Dione
    • Not suitable for HVAC
Size: 1/4" Quick Change Hex Style: Spiral Pattern Name: 1/4 to 1-3/8"
I do HVAC installs and have only used this a handful of times and it's too dull to cut anything. Was just trying to widen some holes in an electrical box today to hook up some whips and this died on the fourth one. For some products it really does make sense to get a higher quality, and this is one of those. ... show more
Reviewed in the United States on February 24, 2026 by Kyle Krason

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