Irwin IWAX2008 Self-feed Drill Bit 2.125 Inch Hex Shank

Product Description

The IRWIN IWAX2008 is a self-feed drill bit designed for fast, aggressive boring through wood framing, engineered lumber, and similar materials encountered in rough-in trade work. It measures 2.125 inches in cutting diameter with a 0.4375-inch hex shank and an overall length of 6.00 inches. The bit is constructed from steel with an oxide coating that helps resist corrosion and reduces friction during drilling. Electricians, plumbers, and HVAC installers reach for self-feed bits when running conduit, pipe, or ductwork through wood members where speed matters and hole consistency is required.

This bit is suited for residential and light commercial rough-in applications. Typical use cases include boring holes through wall plates, floor joists, and roof decking during mechanical, electrical, and plumbing installations. The hex shank seats securely in standard bit extensions and heavy-duty drills, making it a practical choice when working in deep cavities or framed wall assemblies where extended reach is needed. The 2.125-inch diameter accommodates common conduit and pipe pass-through requirements.

Key Features

• 2.125-inch cutting diameter for standard rough-in pass-through holes
• 0.4375-inch hex shank for positive engagement with drill chucks and bit extensions
• 6.00-inch overall length provides reach into framed assemblies
• Steel construction with oxide coating for corrosion resistance and reduced friction
• Self-feed tip pulls the bit through material without sustained downward pressure

Compatibility

Designed as an OEM-style self-feed boring bit compatible with standard 7/16-inch hex-drive drills and bit extensions used in electrical, plumbing, and HVAC rough-in installations.

Installation Notes

Self-feed bits should be installed in a heavy-duty drill or right-angle drill rated for the torque demands of large-diameter boring. Confirm the hex shank is fully seated in the chuck or extension before drilling. When boring near existing wiring or pipe runs, follow applicable NEC or IPC clearance requirements. Wear appropriate eye protection and secure the workpiece to prevent kickback when the bit exits the material.