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  • Irwin 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-Inch Shank Step Drill Bit for-1/2-Inch and 3/4-Inch Conduit
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Irwin 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-Inch Shank Step Drill Bit for-1/2-Inch and 3/4-Inch Conduit

3 customer reviews

List Price: $92.05
Price: $20.99 + $4.59 shipping
You Save: $71.06 (77%)
Only 2 left in stock.
Ships from and sold by westridgetraders585.
  • Enter your model number above to make sure this fits.
  • Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
  • Single-flute cutting edge for greater control through steps
  • Patented single-flute cutting edge gives the user a true round hole every time
  • 3 faltted shank prevents slipping in drill chuck
  • New SpeedPoint tip penetrates faster than previous Unibits and prevents walking
See more product details
46 new from $18.99 2 used from $20.64

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Frequently Bought Together

Irwin 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-Inch Shank Step Drill Bit for-1/2-Inch and 3/4-Inch Conduit + Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit + Irwin 10231 Unibit1 1/8-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit
Price for all three: $68.71

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Product Description

Product Description

585-10239 This item features: -New SpeedPoint tip provides 6X faster initial penetration time than before, and eliminates the need for center punching. -Single-fluted cutting edge assures true round holes, and allows greater control with less vibration. -Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood, and laminates. -Cutting Edge Material: HSS. -Measurement Type: Fractional. -Packing Type: Carded.

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 585-10239
Item Weight2.1 ounces
Product Dimensions6 x 1.2 x 2.9 inches
OriginUSA
Item model number10239
MaterialHigh Speed Steel
Item Package Quantity1
  
Additional Information
ASINB000EB88NG
Best Sellers Rank #219,188 in Home Improvement (See top 100)
Shipping Weight2.1 ounces (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableSeptember 14, 2004
  
Warranty & Support

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

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Most Helpful Customer Reviews

By Crash on April 4, 2012
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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By Bobby Stanley on January 10, 2009
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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2 of 10 people found the following review helpful By Bruce E Bowman on January 7, 2011
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 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-Inch Shank Step Drill Bit for-1/2-Inch and 3/4-Inch Conduit
This item: Irwin 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-Inch Shank Step Drill Bit for-1/2-Inch and 3/4-Inch Conduit
Price: $37.05
Ships from and sold by Amazon.com

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