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Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit | 
| Brand: UniBit
Category: Home Improvement
List Price: $47.30
Buy New: $16.89
You Save: $30.41 (64%)
Rating:  3 reviews
Sales Rank: 35376
Media: Tools & Hardware
Shipping Weight (lbs): 0.3
Dimensions (in): 6 x 2.7 x 0.4
MPN: 10234
Model: 10234
UPC: 038548101040
EAN: 0038548101040
ASIN: B00004THZ0
Availability: Usually ships in 1-2 business days
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| Features:
| • | Step drill that produces true, round holes | | • | Non-skid tip means no need for center punches | | • | 3 flatted shanks prevent drill chuck slipping | | • | Made from durable heat-treated molybdenum steel | | • | Full lifetime warranty |
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| Editorial Reviews:
Product Description
Unibit, 3/16" To 7/8" Step Drill, 12 Holes Sizes From 3/16" To 7/8" In 1/16" Increments, Maximum Material Thickness 1/8", 3 Flatted Shank, Shank Size 3/8", Single Fluted Cutting Edge Assures True Round Holes & Allows Greater Control, Carded.
Amazon.com Product Description
The Irwin 10234 UniBit #4 12-Step High Speed Steel Fractional Self-Starting Step Drill has a single-flute cutting edge to give you more control and produce true, round holes. Twelve holes range from 3/16 to 7/8 inches, in 1/16-inch increments. A non-skid tip does away with the need for center punches, while the three flatted shanks prevent slipping in the drill chuck. This drill is made from industrial-grade high-speed molybdenum steel heat treated for maximum durability, and it is ideal for work on thinner materials. The multiple steps mean you don't have to have a toolbox with specific size drill bits, and this drill is backed by a full lifetime warranty.
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| Customer Reviews:
 The bit is okay but the vendor is worthless March 23, 2008
0 out of 2 found this review helpful
The bit is fine but the vendor is worthless. The first shipment was lost and I had to wait a long time before Amazon would admit it and send another.
 Great drill bit January 11, 2007
3 out of 3 found this review helpful
This a really good drill bit to have in your tool box. Having the graduating sizes is a plus but will need a steady hand or a drill press to achieve the best results.
Great for it's designed purpose.. June 26, 2000
18 out of 18 found this review helpful
The unibit is fantastic for putting holes in thinner material. A plus is the hole will be deburred on the side you are drilling from. When drilling stainless steel (my experience was with 1/8" 316 ss) be careful to reduce RPM as each step goes through. It can work harden the material easily, and ruin the bit. A definate "MUST HAVE" for working with electrical enclosures and panels as well as sheet metal. Just don't throw away your normal twist drills.
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