Irwin Industrial Tool Co 49920 Auger Bit 1-1/4 Inches

Product Description

The IRWIN INDUSTRIAL TOOL CO 49920 is a 1-1/4 inch auger bit designed for boring clean, accurate holes through wood framing, joists, and structural members. Auger bits of this type use a threaded lead screw to pull the bit into the material, reducing operator effort and producing a clean entry hole. The 49920 is a standard trade-supply format sold in a package quantity of 12, making it practical for job-site stocking. It is commonly used by electricians, plumbers, and HVAC technicians when routing conduit, pipe, or ductwork through wood framing during rough-in work.

This bit is suited for residential and light commercial construction and renovation applications. Electricians use auger bits to bore through wall plates and floor joists for wire runs. Plumbers use them for drain and supply line penetrations. HVAC installers use them for low-voltage control wiring and refrigerant line routing. The 1-1/4 inch diameter makes it a practical size for single-pipe or conduit passes through standard dimensional lumber.

Key Features

• 1-1/4 inch boring diameter for pipe, conduit, and wire routing applications
• Threaded lead screw design pulls the bit into material for consistent feed rate
• Packaged in quantities of 12, suitable for job-site supply or shop stocking
• Standard auger bit form factor compatible with most corded and cordless drill chucks

Compatibility

Designed as a standard auger bit replacement for use with corded or cordless drills and bit extensions in rough-in drilling applications.

Installation Notes

Auger bits are installed and operated by electricians, plumbers, and HVAC technicians performing rough-in drilling through wood framing. Always ensure the drill is powered off and the bit is fully seated in the chuck before use. When boring near structural members, follow applicable building codes regarding maximum hole size and placement relative to bearing loads. Wear appropriate eye protection when drilling.