Irwin 10221 High Speed Steel Fractional Unibit 21, 13/16"-1 3/8"

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Product details

Management number	200997474	Release Date	2025/09/17	List Price	$56.17	Model Number	200997474
Category	Tool Accessories Drill Bits

Irwin 10221 Description

Unibit step drills from Irwin are the industry standard. Their single flute design results in a much more accurate hole than double flute bits. The SpeedPoint™ gets the hole started fast! Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood and laminates. Models designated with a "T" offer a TiN (Titanium Nitride) coating which hold their cutting edge up to six times longer!

Irwin 10221 Includes

(1) High Speed Steel Fractional Unibit 21, 13/16"-1 3/8"

Irwin 10221 Features

Single-flute cutting edge for greater control through steps
3 flatted shank prevents slipping in drill chuck
Also available with titanium nitride coating for longer life
Patented single-flute cutting edge gives the user a true round hole every time
Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
Pilot hole required
Practical, efficient tools to get your job done right
Made to ensure maximum longevity and high wear resistance
Ultimate in reliability, convenience, and ease of use

Irwin 10221 Specifications

Hole Sizes	13/16" - 1-3/8"
Flutes	1
Hole Sizes (inches)	Hole Enlarging
Shank Size	1/2"
Construction	High Speed Steel
Number of Holes	10
Maximum Material Thickness	1/8"