1-3/8" Reduced Shank Cobalt Drill Bit 1/2" Shank

The 1-3/8" Reduced Shank Cobalt Drill Bit with 1/2" Shank is designed for drilling large diameter holes in tough metals using standard drill chucks. Made from cobalt steel, it offers superior heat resistance and durability, making it ideal for stainless steel, hardened steel, and other difficult materials.

The reduced 1/2" shank allows this oversized drill bit to be used in drills with a 1/2" chuck capacity, eliminating the need for specialized equipment while maintaining strong cutting performance. Commonly used in automotive, fabrication, and industrial applications, this drill bit delivers reliable results and extended tool life in demanding environments.

Features & Benefits

• 1-3/8" drill bit diameter
• 1/2" reduced shank for use with standard drill chucks
• Cobalt steel construction for superior heat resistance
• Heavy-duty design for drilling large holes in tough metals
• Ideal for stainless steel, hardened steel, and alloys
• Suitable for automotive, fabrication, and industrial applications

This reduced shank cobalt drill bit provides the ability to drill large diameter holes with standard equipment while maintaining durability and consistent performance.

In-stock items usually ship within 2 business days but can take up to 7 business days. Shipping time starts once your order heads out the door.