Irwin UNIBIT Step Drill Set, Self-Starting, #1 Minimum Drill Bit Size, #21 Maximum Drill Bit Size, 4 Piece, High Speed Steel

ITEM FEATURES:

• Single flute cutting edge for greater control through steps
• Three flatted shank prevents slipping in drill chuck
• Non-skid self-starting tip eliminates skidding and the need for center punching