Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit

by Irwin

Product Description

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.

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.

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Product Details

• Item Weight: 3.2 ounces
• Shipping Weight: 3.2 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00004THZ0
• Item model number: Unibit
• Average Customer Review: 4.0 out of 5 stars  See all reviews (5 customer reviews)
• Amazon Best Sellers Rank: #89,962 in Home Improvement (See Top 100 in Home Improvement)
  • #59 in Home Improvement > Power & Hand Tools > Power Tool Accessories > Drill Bits > Brad-Point Bits

Customer Reviews

Most Helpful Customer Reviews

20 of 20 people found the following review helpful:

4.0 out of 5 stars Great for it's designed purpose.., June 25, 2000

By 

"tech003" (Oklahoma, USA) - See all my reviews

This review is from: Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit (Tools & Home Improvement)

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.

3 of 3 people found the following review helpful:

4.0 out of 5 stars Great drill bit, January 11, 2007

By 

Hakeem Shabazz "Redtail" (Benicia, CA, USA) - See all my reviews
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This review is from: Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit (Tools & Home Improvement)

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.

1 of 1 people found the following review helpful:

5.0 out of 5 stars GREAT bit, October 3, 2011

By 

Steve Tractenberg - See all my reviews
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Amazon Verified Purchase

This review is from: Irwin 10234 Unibit4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit (Tools & Home Improvement)

Used mainly to enlarge pilot holes in old beer kegs (stainless steel) for brewing purposes, after you drill a pilot hole and use some cutting oil, this bit goes right through to your desired diameter. Highly recommended.