Features and Benefits:

• Step drills made for professionals
• Titanium Aluminum Nitride (TiALN) for extreme heat and wear prevention, not just a decorative coating like most step drills
• Two step drills included

The Astro Pneumatic Tool 9442 Blue Steel 2-Piece Max-Duty Step Drill Set is made with Titanium Aluminum Nitride (TiALN) for extreme heat and wear prevention, not just a decorative coating like most step drills.