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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


List Price: $92.05
Price: $34.51 & FREE Shipping
You Save: $57.54 (63%)
In stock.
Usually ships within 2 to 3 days.
Ships from and sold by Bazaar51.
  • 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
36 new from $24.99 1 used from $31.99

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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 10235 Unibit5 1/4-Inch to 1-3/8-Inch 1/2-Inch Shank Step Drill Bit + Neiko Titanium Step Drill Bit - 1/4" to 1-3/8" in 1/8" Increments, 10 Steps
Price for all three: $88.68

These items are shipped from and sold by different sellers.

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Special Offers and Product Promotions

  • Buy Used and Save: Buy a Used "Irwin 10239 Unibit9 7/8-Inch and 1-1/8-Inch 1/2-In..." and save 65% off the $92.05 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

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 #48,746 in Home Improvement (See top 100)
Shipping Weight2.1 ounces (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableSeptember 14, 2004
  
Warranty & Support
Warranty, Parts: Parts
Feedback
 

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

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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1 of 7 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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