Irwin Industrial Tools 10225 Unibit General Purpose Step Drill Bit Set, 4-Piece

Single-flute cutting edges for greater control through steps

3-flatted shanks prevents slipping in drill chuck

Non-skid self-starting tips eliminate skidding and the need for center punching

Sizes clearly laser-etched to make precise drilling easy

Set includes HSS #1, 2, 4, and 21 size step drills

The IRWIN Unibit High-Speed Steel Step Drill Set features single-flute cutting edges for greater control and more precise drilling. Three-flatted shanks prevent the bits from slipping in the drill while the non-skid self-starting tips eliminate skidding and the need for center punching. Set includes #1, 2, 4, and 21 size step drills.
Brand: Irwin Tools, Model: 10225, Color: Black, Size: 4PC SET