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Irwin Tools UniBit 3/16-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10232)

4.9 out of 5 stars 12 customer reviews

List Price: $32.23
Price: $10.43 & FREE Shipping on orders over $35. Details
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1/2 inches
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  • 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 3/16" - 1/2" holes in 1/16" steps
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$10.43 & 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 3/16-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10232)
  • +
  • Irwin Tools Unibit #4 3/16-Inch to 7/8-Inch Step-Drill Bit, 3/8-Inch Shank (10234)
  • +
  • Irwin Tools Unibit #1 1/8-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10231)
Total price: $40.89
Buy the selected items together

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Size: 1/2 inches
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WARNING:
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Product Description

Size: 1/2 inches

Product Description

This IRWIN Unibit #2 High-Speed Steel Fractional Self-Starting Step Drill Bit features a single-flute cutting edge for greater control through each of its 6 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

The #2 UniBit Step Drill has 6 holes--3/16-inch to 1/2-inch hole sizes with increments of 1/16-inch; shank size is 1/4-inch. Each UniBit step drill has an easy-to-sharpen, non-skid tip which eliminates skidding and the need for center punching; the tip gives sure starts even on curved surfaces. The single-fluted cutting edge that you will find on the UniBit step drills helps assure true round holes and allows greater control. They are constructed of industrial grade high speed molybdenum steel and heat treated to assure maximum durability. The UniBit step drill has 3 flatted shanks, which prevents slipping in drill chuck. The multiple steps on each UniBit eliminates the need to maintain a toolbox full of specific size drill bits. Full lifetime warranty--each UniBit step drill is warranted to be free from defects in material and workmanship for the life of the tool, except for damage caused by abuse, misuse, or alteration.

Product Information

Size:1/2 inches

Technical Details

Part Number 10232
Item Weight 1.6 ounces
Product Dimensions 0.8 x 2.9 x 6 inches
Origin USA
Item model number 10232
Size 1/2 inches
Color Black
Finish Black Oxide
Material High Speed Steel
Item Package Quantity 1
Cutting Diameter 2.9 inches
Tool Tip Description 118 Degree
Measurement System Fractional
Batteries Required? No

Additional Information

ASIN B00004THYY
Customer Reviews
4.9 out of 5 stars 12 customer reviews

4.9 out of 5 stars
Best Sellers Rank #122,418 in Home Improvements (See top 100)
#61 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Drill Bits > Step Drill Bits
#64 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Drill Bits > Brad-Point Drill Bits
#7,852 in Home Improvement > Contractor Supply
Shipping Weight 1.6 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 May 26, 2000

Warranty & Support

Warranty, Parts:Parts

Customer Reviews

Top Customer Reviews

Size: 1/2 inches
This Irwin 10232 Unibit is a high quality set step drill, made in the USA. While it does cost more than competing off-shore bits it is also significantly superior in all respects.

The Good:
Smooth, sharp cutting edges allows one to produce clean accurate holes with ease in thin metal, plastic and wood.
Pointed tip does indeed prevent the bit from wandering or skipping when starting a hole. No counterpunch or pre-drilling required to achieve accuracy.
The shank is formed to fit 1/4” hex drivers. The amazon product photo does not show these newer driver style shanks (at the time of this review).
Markings are highly visible and easy to read.
The quality workmanship of this product is obvious: sharp, finely machined, highly visible markings.

The Bad:
There really isn’t anything serious to complain about, so consider the following list to be nit-picking…
The bit fits standard 1/4” hex drivers, but the shank section before the groove is a bit shorter than normal (see photo). This is no problem whatsoever in magnetic drivers. In my non-magnetic Makita impact driver the bit had slightly more in-and-out play than usual, but it did not affect drilling performance. (I warned you I was nit-picking!).

Summary:
If you enjoy using top quality tools then this set is worthy of your consideration.

If you like short reviews - stop here!

On the other hand, if you like lots of extra information, then please by all means read-on…

The bit has a hex shank for positive slip-free use in standard drill chucks. This #2 bit also fits in standard 1/4” drill drivers, impact drivers, etc.
Read more ›
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Size: 1/2 inches Verified Purchase
I love having this around for quick projects I'm working on. It cuts through metal much easier than the traditional drill bits and its so easy to step up the size of the hole. I would recommend having one of these around and this one works well at a good price.
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By Jammer on December 31, 2013
Size: 1/2 inches Verified Purchase
So far I have used this on my auto projects, mostly 20 gauge metal. The bit has worked well and made clean holes. It has maintained sharpness for at least 40 holes and is going strong. I am happy with this product and am happy with my other Irwin products.
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Size: 1/2 inches Verified Purchase
Used this to enlarge the holes in a ukulele peg head to install new
tuners. This baby is strong and razor sharp. A fine piece of kit!
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Size: 1/2 inches Verified Purchase
I used to use bits like these when I installed whiteboards and projectors in schools for a living. I used them for cutting holes in the pole that connects the ceiling bracket to the projector mount, because often I had to cut the pole down and so the factory-machined retention hole would be lost at one end. I have found them to be the fastest way of drilling thin walled metal (< 4 mm) round and square pipe on site, and they leave a clean circular hole with little to no burr.

They are also good for drilling plastic if the need arises. This Unibit has stayed sharp and true for my home usage requirements. I've used it manufacturing gym equipment at home and for making existing holes bigger. I give this product 5 stars.
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Size: 1/2 inches Verified Purchase
use this bit all the time as i find it is a very useful drill bit. i find it quicker to use than changing drill bits.
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Irwin Tools UniBit 3/16-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10232)
This item: Irwin Tools UniBit 3/16-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10232)
Price: $10.43
Ships from and sold by Amazon.com
Want to discover more products? Check out these pages to see more: uni bit, 1 3/16 drillbit, unibits 1'