Eagle Cutting Tool 1080D-043-D 43/64 Drill Bit 1/2 Shank

Product Description

The EAGLE CUTTING TOOL 1080D-043-D is a 43/64-inch black and gold step-down drill bit designed for heavy-duty metal drilling applications. Built in the USA, it features a 1/2-inch reduced shank that fits standard 1/2-inch chucks without requiring a larger machine. The black and gold oxide finish reduces friction and helps extend tool life under sustained use. This bit is suited for electricians, pipefitters, HVAC technicians, and other trade professionals who need accurate, clean holes in steel, iron, and similar metals on the job site or in the shop.

This drill bit is a practical choice for trade work requiring consistent hole sizing in ferrous metals. The step-down shank design allows a 43/64-inch cutting diameter to be driven by a standard 1/2-inch chuck, making it compatible with common corded and cordless drills already on the truck or in the shop. It is well suited for conduit knockout prep, pipe flange work, and similar applications where a precise large-diameter hole is needed without specialty equipment.

Key Features

• 43/64-inch cutting diameter for large-hole drilling in metal
• 1/2-inch reduced step-down shank fits standard 1/2-inch chucks
• Black and gold oxide finish reduces friction and extends cutting life
• Made in the USA
• Minimum order quantity of 1 — sold individually

Compatibility

Designed as a direct-fit replacement or upgrade for standard 43/64-inch twist drill bits used with any 1/2-inch keyed or keyless chuck drill or drill press.

Installation Notes

This bit is installed and operated by electricians, plumbers, HVAC technicians, and general tradespeople using standard corded or cordless drills and drill presses. Secure the 1/2-inch shank firmly in the chuck before operation and confirm the chuck is fully tightened. Use appropriate cutting fluid when drilling thick ferrous stock to preserve edge life. Always wear eye protection and secure the workpiece before drilling.

Technical Specifications

• Cutting Diameter: 43/64 inches
• Shank Size: 1/2 inches
• Shank Type: Step-down (reduced)
• Finish: Black and gold oxide
• Weight: 0.69 pounds
• Country of Origin: USA

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1080D-043-D