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  • Irwin 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit
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Irwin 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit

9 customer reviews

List Price: $32.23
Price: $13.49 & FREE Shipping on orders over $35. Details
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Ships from and sold by Amazon.com. Gift-wrap available.
1/2 inches
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  • 6 hole sizes
  • Easy-to-sharpen, non-skid tip
  • Single-fluted cutting edge
  • 3 flatted shank
  • Full lifetime warranty
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Frequently Bought Together

Irwin 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit + Irwin 10231 Unibit1 1/8-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit + Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit
Price for all three: $61.21

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Product Description

Size: 1/2 inches

Product Description

Hanson Step Drills 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. The single radial flute assures perfectly round holes. Use on steel, brass, aluminum and other thin materials. Step Drills are self-starting and will not slip.Drill diameters etched in flute for easy identification.

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 Weight1.6 ounces
Product Dimensions0.8 x 2.9 x 6 inches
Item model number10232
Size1/2 inches
ColorBlack
FinishBlack Oxide
MaterialHigh Speed Steel
Item Package Quantity1
Cutting Diameter2.9 inches
Tool Tip Description 118 Degree
Measurement SystemFractional
  
Additional Information
ASINB00004THYY
Best Sellers Rank #149,007 in Home Improvement (See top 100)
Shipping Weight1.6 ounces (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First AvailableMay 26, 2000
  
Warranty & Support
Warranty, Parts: Parts
Feedback
 

Customer Questions & Answers

Customer Reviews

5 star
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4 star
11%
3 star
0%
2 star
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1 star
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Most Helpful 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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By Ryan on April 2, 2013
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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By John Wade Long Jr. on April 24, 2014
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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By anony on June 25, 2014
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 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit
This item: Irwin 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit
Price: $13.49
Ships from and sold by Amazon.com