Irwin 87912 Speedbor Wood Boring Bit 3/4 X 4 Inch

Product Description

The IRWIN INDUSTRIAL TOOL CO 87912 is a Speedbor wood boring bit designed for drilling clean, straight holes in wood framing and finish carpentry applications. The bit measures 0.75 inches in diameter and 4 inches in length. The shorter overall length is the defining feature here — it allows the bit to fit and operate in confined spaces where a standard-length spade or auger bit cannot be maneuvered. Trade pros working rough-in electrical, plumbing, or HVAC runs through framing will recognize the value of a compact bit that still delivers a full 0.75-inch bore without sacrificing control or hole quality.

This bit is well suited for residential and light commercial work where drilling access is limited by surrounding structure. Common scenarios include boring through wall studs, ceiling or floor rafters, and the interior walls of cabinetry or enclosed chases. Electricians, plumbers, and HVAC installers running conduit, pipe, or flex duct through tight framing cavities will find the short-length design practical for in-place drilling without disassembling adjacent structure. The bit is sold individually on a retail card and is compatible with standard drill chucks.

Key Features

• Short 4-inch length designed for access between studs, rafters, and inside cabinets
• 0.75-inch diameter bores full-size holes for wire, pipe, or conduit runs
• Speedbor flat-spade design optimized for straight holes in wood
• Compatible with standard 3-jaw drill chucks used in cordless or corded drills
• Carded packaging for easy storage and jobsite organization

Compatibility

Designed for use with standard drill chucks accepting flat spade-style wood boring bits. Intended for use in wood framing, engineered lumber, and finish wood panels typical of residential and light commercial construction.

Installation Notes

This bit is installed and operated by electricians, plumbers, HVAC technicians, and general contractors performing rough-in work. Always ensure the drill is powered off and the bit is fully seated in the chuck before operation. When boring through framing members, verify no hidden utilities are present in the drilling path. Follow applicable local building codes regarding hole size and placement relative to structural members.