Irwin UNIBIT HSS 3 Piece Step Drill Set, Range 1/8"to 1/2"by 1/32nds,3/16"to 1/2" & 1/4" to 3/4" by 1/16ths - 01-906-004

Irwin UNIBIT HSS 3 Piece Step Drill Set, Range 1/8"to 1/2"by 1/32nds,3/16"to 1/2" & 1/4" to 3/4" by 1/16ths - 01-906-004

• Includes: (1) Each of Sizes: #1, #2, #3
• Specialty step drill designed to machine a large number of different hole diameters with a single tool.
• Single cutting edge creates perfectly round holes in metal, plastic, and wood without center punching.
• For use with thin materials.
• Two general variations are available for either self-starting holes or for enlarging existing holes.
• Single flute design helps to ensure perfectly round holes in a wide range of ferrous, non-ferrous and non-metallic materials.

Features:

• Right hand (clockwise rotation) cutting direction.
• Multi-step design with progressively larger holes.
• Self-starting or hole enlarging styles.
• Single Flute.
• Hardness: 58 to 60 RC