SKU / Product Info	Quantity
10231 #1, Hole Sizes: 1/8" - 1/2", Hole #: 13 steps, Max Thickness: 1/8"
10232 #2, Hole Sizes: 3/16" - 1/2", Hole #: 6 steps, Max Thickness: 3/8"
10233 #3, Hole Sizes: 1/4" - 3/4", Hole #: 9 steps, Max Thickness: 1/8"
10234 #4, Hole Sizes: 3/16" - 7/8", Hole #: 12 steps, Max Thickness: 1/8"
10235 #5, Hole Sizes: 1/4" - 1-3/8", Hole #: 10 steps, Max Thickness: 1/8"
10239 #9, Hole Sizes: 7/8" and 1-1/8", Hole #: 2 steps, Max Thickness: 1/8"
10310 #10, Hole Sizes: 1/2", Hole #: N/A, Max Thickness: N/A
10311 #11, Hole Sizes: 7/8", Hole #: N/A, Max Thickness: N/A
10312 #12, Hole Sizes: 3/8", Hole #: N/A, Max Thickness: N/A
10313 #13, Hole Sizes: 1-1/8", Hole #: N/A, Max Thickness: N/A
10314 #14, Hole Sizes: 1-7/32", Hole #: N/A, Max Thickness: N/A

Quick Overview

Single-flute cutting edge for greater control through steps
Hex shank prevents slipping in drill chuck
Also available with (TiN) coating for longer life
New SpeedPoint tip penetrates faster than previous Unibits and prevents walking
Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates

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Additional Information

Manufacturer: Irwin Tools

For More Information on the High Speed Steel Fractional Self-Starting, [Click Here] to Link to Manufacturer Web Site

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High Speed Steel Fractional Self-Starting

Irwin Tools

B & L Bolt