SKU: 56226152540

IRWIN Step Drill Bit. 1/8-Inch to 1/2-Inch Step. 1/4-Inch Shank (10231)

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Description

IRWIN Step Drill Bit. 1/8-Inch to 1/2-Inch Step. 1/4-Inch Shank (10231)Irwin 10231 Unibit #1 13 Step 1 4 Inch Step Drill Bit. 1 32 inch Steps (1 8 to 1 2 inches) Save time by eliminating the need to change drills when drilling round holes in thin materials. Each smaller size drill also acts as a pilot for the next size. Patented single flute cutting edge gives greater control through steps and a true round hole every time. Ideal for drilling holes into thin materials such as stainless steel. copper. brass. aluminum.

Irwin 10231 Unibit #1 13-Step 1/4-Inch Step Drill Bit. 1/32-inch Steps (1/8- to 1/2- inches) Save time by eliminating the need to change drills when drilling round holes in thin materials. Each smaller size drill also acts as a pilot for the next size. Patented single-flute cutting edge gives greater control through steps and a true round hole every time. Ideal for drilling holes into thin materials such as stainless steel. copper. brass. aluminum. plastic and laminates. SpeedPoint tip penetrates faster than previous Unibits and prevents walking. 3-faltted hex shank prevents slipping in drill chuck. Drill diameters etched in flute for easy identification.

From the Manufacturer

UNIBIT 1 13 Hole Sizes (1/8"-1/2"). 1/32" Increments

Features

  • This product is easy to use

  • This product is highly durable

  • This product is manufactured in United States

  • Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.

  • Patented single-flute cutting edge gives greater control through steps and a true round hole every time.

  • Ideal for drilling holes into thin materials such as stainless steel. copper. brass. aluminum. plastic and laminates.

  • Speed Point tip penetrates faster than previous Unibits and prevents walking. 3-faltted hex shank prevents slipping in drill chuck.

  • Drill diameters etched in flute for easy identification.

  • Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.

  • Patented single-flute cutting edge gives greater control through steps and a true round hole every time.

  • Ideal for drilling holes into thin materials such as stainless steel. copper. brass. aluminum. plastic and laminates.

  • SpeedPoint tip penetrates faster than previous Unibits and prevents walking. 3-faltted hex shank prevents slipping in drill chuck.

  • Drill diameters etched in flute for easy identification.

Specifications

Part Number : 10231

Item Weight : 1.6 ounces

Product Dimensions : 6 x 2.9 x 0.8 inches

California residents : Click here for Proposition 65 warning

Item model number : 10231

Size : 1/2 inches

Color : Silver|Silver metallic

Finish : Black Oxide

Material : High Speed Steel

Item Package Quantity : 1

Cutting Diameter : 3 inches

Tool Tip Description : 118 Degree

Measurement System : Fractional

Included Components : Power Tool Accessories. Drill Bits & Accessories. Step Drill Bits

Batteries Included? : No

Batteries Required? : No

Warranty Description : Manufacturer

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 56226152540

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Rhonda W. Withers
New York, US
★★★★★ 3
Triggers rocasea
Scent: Unscented - Jojoba Oil
It isn't as greasy feeling as I thought it might be, and it smells good and feels nice and creamy. I have slight rocasea, and the product made my skin turn red and burn a little. I'm not sure whether I should continue using it. It might be great for people without rocasea.
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Reviewed in the United States on March 20, 2026
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Baba
Massapequa, US
★★★★★ 4
Deep moisture
Scent: Unscented - Upgraded
Moisturizes well. Light pleasant smell,
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Reviewed in the United States on June 8, 2026
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Eve.h
Houston, US
★★★★★ 5
Love it!! Very soft and beautiful on skin
Scent: Unscented - Jojoba Oil
Love love love. I have tried a couple of beef tallow now and I am in love with this one the consistency for me is perfect not to loose feeling but thick enough to feel how soft and lovely it is I am a total fan and will definitely buy again my face feels so soft after using this if you have dry skin this is for you
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Reviewed in the United States on June 2, 2026
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Odele
Grantham, US
★★★★★ 5
Love this Tallow!!
Scent: Unscented - Upgraded
Absolutely lve this tallow. Really hels my dry hands and arms. I use it as night cream for my face also and it soothing.
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Reviewed in the United States on May 14, 2026
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Michelle K
Cuba, US
★★★★★ 5
Gentle soap, great for hands and body!
I love how gentle this oatmeal soap is. It’s perfect for sensitive skin and doesn’t irritate my hands even when they are rough. I keep one at my sink and one in the shower. The natural scent is lovely and not overpowering. A must-buy for those looking for a mild cleanser!
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Reviewed in the United States on February 3, 2026

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