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About Drill Bits
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Compare material, finish, length class, and decimal size equivalents.
Multidiameter High-Speed Steel Step Drill Bits
 |  |
Style A Round Shank 3-Flat Shank | Standard |
With no fixed diameters, one bit cuts holes of almost any size within a range. Slip a washer (not included) over the bit to set your diameter. The washer acts as stop while drilling, so choose a washer with an inner diameter that matches your desired hole size. Wear and heat resistant, these high-speed steel bits are versatile for use on a range of materials.
Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
