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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