The Astro Pneumatic Tool 9442 Blue Steel 2-Piece Max-Duty Step Drill Set is the ultimate multi-purpose max duty option for professionals. Including the two most popular automotive sizes (up to ½” by 32ths and ¾” by 16ths) these 3-flatted shank step drills feature Titanium Aluminum-Nitride for the greatest possible heat and wear prevention.

This unique formulation replaces itself with an additional clear oxide wear preventing coating when worn away after extended use. Together with a double fluted design for clean round cuts, this set is made to laser through everything from sheet metal and stainless to ½” thick cold formed plate.

• Two professional duty step-drills in popular sizes, up to ½” by 32ths and up to ¾” by 16ths
• Titanium Aluminum Nitride (TiALN) for extreme heat and wear prevention, not just a decorative coating like most step drills
• Unique formulation continually replaces itself with a clear oxide wear preventative coating as it wears away from use
• Double fluted design for perfectly round holes with shapr cutting angles to quickly drill through everything from sheet metal to ½” thick plate

• Wear Preventative Coating
• Titanium Aluminum Nitride (TiALN) M2 High Speed Steel base material
• Sizes: Up to 1/2″ by 1/32″ and up to 3/4″ by 1/16″

Item Specifications

1 Year Limited Warranty

Optional Asurion Protection Plan: To further protect your purchase, you can buy an Asurion protection plan from Amazon here. Review the FAQs for additional information.

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, or APO addresses is not available for this item.