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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.
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Arrives Saturday, Oct 10
Order within 17 hours and 21 minutes
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Size: 3pc (1/8 - 7/8", 31S)


Style: Spiral


Pattern Name: Quick-Change Hex


Configuration: HSS


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


Cutting Diameter: 3.18 millimeters


Finish Type: Titanium


Shank Type: Hex


Cutting Angle String: 135 degrees


Brand Name: NEIKO


Model: 10181A


UPC: 816914021617


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


Unit Count: 3 Count


Global Trade Identification Number: 17


Number of Packs: 3


Manufacturer: Neiko


Part Number: 43219-22909


Number of Pieces: 3


Included Components: Grooved step drill bits


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


Item Weight: 4.16 ounces


Cutting Diameter: 3.18 millimeters


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, Oct 10

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

    • Good Value & Clean Cuts
Size: 3pc (1/8 - 7/8", 31S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
The bits seems sturdy. I've drilled many different materials with great success (plastic, wood, and metal) it makes very clean holes and suspect the bits will last a long time. My only complaint is the letters for the hole sizes on the bits are hard to read, and the font has already worn off after a few uses. Kind of expected though so it's not a big deal. ... show more
Reviewed in the United States on July 27, 2020 by burlybilly
    • Good set for a reasonable cost
Size: 5pc (1/8 - 1-3/8", 50S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
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
    • All great until….
Size: 5pc (1/8 - 1-3/8", 50S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
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
    • 10/10 holes.
Size: 5pc (1/8 - 1-3/8", 50S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
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
    • WHERE HAVE THESE BEEN ALL MY LIFE?
Size: 3pc (1/8 - 7/8", 31S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
These were just what I needed to rehab and put new wheels on the twelve food service carts that we use for our church school cafeteria and food pantry. On two of the carts, I installed new wheels on the old mountings. The new wheels used a larger center bolt, so I had to ream-out the mounts (that's 16 holes in 1/8 steel). One of these guys enabled me to do all of them in less than 10 minutes, and showed no wear. On 9 of the carts, the new heavier duty wheels required that I add a quarter-inch plywood shim between the mounting surfaces. I had used a drill guide to bore four 5/16" holes in the corners of these shims, but my aim was often just a hair off dead centers. One of these 3 reamers has quarter-inch increments between each step. Using that, I was able to drill some holes just a little larger to fit neatly over each set of 4 bolts. The reamer was very sharp and cut through the plywood cleanly and quickly with no splintering. This is a very handy tool, at this low price, to have in your toolbox. It will save you a whole bunch of frustration and time. Like I said, where has this tool been all my life? ... show more
Reviewed in the United States on October 16, 2020 by Ben W. Washburn
    • Good quality
Size: 3pc (1/8 - 7/8", 31S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
Very solid quality, highly recommend!!
Reviewed in the United States on May 20, 2026 by Rich
    • PIECE OF JUNK THAT WILL WASTE YOUR TIME
Size: #8 (1/2 - 1", 9S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
WHAT A PIECE OF JUNK !!!!! Tried to drill a 1/16" thick piece of stainless steel and the bit started to burn and get dull within 30 seconds SAVE YOURSELF THE TIME, DON'T BUY THIS
Reviewed in the United States on September 19, 2026 by Arthur B.
    • Quick refund
Size: #5 (1/4 - 1-3/8", 10S) Style: Spiral Pattern Name: Quick-Change Hex Configuration: HSS
Step drill shaft broke off first hole must have been defective company gave refund no hassles
Reviewed in the United States on September 20, 2026 by Kent Rogers

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