DEWALT DW1604 3/16-Inch by 12-Inch Extra Long Black Oxide Drill Bit

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• 135 degree split point drills on contact and prevents walking


• Parabolic flute design improves chip ejection in metal and wood drilling applications


• Black oxide coated for greater wear resistance


• Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute

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Irwin 10232 UniBit 3/16-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit

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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.

• 6 hole sizes


• Easy-to-sharpen non-skid tip


• Single-fluted cutting edge


• 3 flatted shank


• Full lifetime warranty

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

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.

• 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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