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Irwin Tools Unibit #9 7/8-Inch and 1-1/8-Inch Step-Drill Bit, 1/2-Inch Shank (10239)

4 out of 5 stars 4 customer reviews

List Price: $92.05
Price: $34.70 & FREE Shipping on orders over $35. Details
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In Stock.
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  • None
  • Imported
  • Single-flute cutting edge for greater control through steps
  • SpeedPoint tip penetrates fast and helps prevent walking
  • Hex shank helps prevent slipping in the drill chuck
  • IRWIN Unibit step drill bits are ideal for drilling holes into thin materials, such as stainless-steel, copper, brass, aluminum, plastic and laminates
  • Drills 7/8-inch and 1-1/8-inch holes
See more product details
37 new from $25.00 1 used from $24.44

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$34.70 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Irwin Tools Unibit #9 7/8-Inch and 1-1/8-Inch Step-Drill Bit, 1/2-Inch Shank (10239)
  • +
  • Irwin Tools Unibit #5 1/4-Inch to 1-3/8-Inch Step-Drill Bit, 1/2-Inch Shank (10235)
  • +
  • Irwin Tools Unibit #4 3/16-Inch to 7/8-Inch Step-Drill Bit, 3/8-Inch Shank (10234)
Total price: $125.81
Buy the selected items together

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WARNING:
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Product Description

Product Description

This IRWIN Unibit #9 High-Speed Steel Fractional Self-Starting Step Drill Bit features a single-flute cutting edge for greater control through each of its 2 steps. The sharp SpeedPoint tip penetrates fast and helps prevent walking, while the hex shank helps prevent slipping in a drill chuck. Use this reliable drill bit to drill holes into thin materials like stainless-steel, copper and more.

From the Manufacturer

UNIBIT 9 2 Hole Sizes (7/8" and 1-1/8" )for 1/2" and 3/4" KO

Product Information

Technical Details

Part Number 10239
Item Weight 2.1 ounces
Product Dimensions 6 x 2.9 x 1.2 inches
Origin USA
Item model number 10239
Material High Speed Steel
Item Package Quantity 1
Measurement System Inch
Batteries Required? No

Additional Information

ASIN B000EB88NG
Customer Reviews
4 out of 5 stars 4 customer reviews

4 out of 5 stars
Best Sellers Rank #127,775 in Home Improvements (See top 100)
#68 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Drill Bits > Step Drill Bits
Shipping Weight 2.1 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available September 14, 2004

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Reviews

5 star
75%
4 star
0%
3 star
25%
2 star
0%
1 star
0%
See all 4 customer reviews
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Top Customer Reviews

Verified Purchase
I'm an electrician working downtown in a steal frame new construction building and have to punch many holes and this does the trick. Great for the middle being longer to note its at a 7/8 hole that is perfect for out MC connectors we use.
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I purchased this bit to increase the 1/2" hole in junction boxes to 3/4". It worked beautifuly and never caught like other bits. I paid almost $45 for mine. Amazon has a great price on this product.
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Verified Purchase
I liked it until someone on the job site stole it. However it definitely did the job real well.... till it grew legs and left. :-(
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I didn't buy this from Amazon. I got it from [hardware store].

There is nothing in the packaging that states it requires a 1/2" chuck. Fortunately, Amazon prominently lists this fact in the title of the item, but [hardware store]'s web site did not.

I guess I should have noticed this in the store, but I didn't. Even if I had, I would have wasted a trip.

Few people have portable drills with 1/2" chucks. I'm taking mine back for a refund.
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Irwin Tools Unibit #9 7/8-Inch and 1-1/8-Inch Step-Drill Bit, 1/2-Inch Shank (10239)
This item: Irwin Tools Unibit #9 7/8-Inch and 1-1/8-Inch Step-Drill Bit, 1/2-Inch Shank (10239)
Price: $34.70
Ships from and sold by Amazon.com

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