Irwin 87910 Speedbor Wood Boring Bit 5/8 X 4 Inch

Product Description

The IRWIN INDUSTRIAL TOOL CO 87910 is a Speedbor wood boring bit designed for drilling clean, straight holes in confined spaces. At 5/8 inch in diameter and 4 inches in length, its shorter profile is purpose-built for situations where a standard-length bit cannot fit or maneuver. Electricians, plumbers, and HVAC technicians regularly use this type of bit when running wire, pipe, or flex duct through framing. The compact overall length reduces bind risk in tight quarters and keeps the drill closer to the work surface for better control.

This bit is suited for residential and light commercial applications where boring through wood framing is required in restricted areas. Typical scenarios include drilling between wall studs, through rafters, and inside cabinet interiors where clearance is limited. Tradespeople routing conduit, low-voltage cabling, or supply lines through existing framing will find the shortened length a practical advantage over standard spade or auger bits.

Key Features

• 5/8 inch diameter delivers a clean hole sized for common wire and small pipe pass-throughs
• 4 inch overall length allows access in spaces too tight for standard-length boring bits
• Designed to drill straight holes in confined framing cavities such as stud bays and rafter spaces
• Suitable for use inside cabinetry and other enclosed wood structures
• Packaged individually on a card for easy identification and storage

Compatibility

Designed as an OEM-style replacement-compatible wood boring bit for use in standard 3/8 inch or 1/2 inch keyed or keyless drill chucks commonly used in trade applications.

Installation Notes

This bit is installed by a licensed electrician, plumber, HVAC technician, or qualified carpenter as part of a rough-in or retrofit boring operation. Secure the bit fully in the drill chuck before use and confirm the workpiece is stable before drilling. Always verify there are no hidden utilities, wiring, or fasteners in the boring path before applying power. Follow applicable NEC, IPC, or IFGC clearance requirements when boring near structural members.