Irwin 88820 Speedbor Wood Boring Bit 1-1/4 in 6 in

Product Description

The IRWIN 88820 is a Speedbor wood boring bit designed for drilling through wood framing, sheathing, and rough lumber in residential and light commercial construction. The bit features a 1-1/4 inch cutting diameter, a 6 inch overall length, and a 1/4 inch shank that fits standard drill chucks and quick-change adapters. It is suited for applications requiring fast stock removal or clean, precise holes through dimensional lumber and engineered wood products. Licensed electricians, plumbers, and HVAC installers commonly use this bit type when running conduit, pipe, or flex duct through wood framing members.

This bit is used in wood drilling applications where bore diameter accuracy and depth control matter. The 1-1/4 inch diameter is a common size for running pipe sleeves, wire bundles, and small conduit through wall studs and floor joists. The 6 inch length provides adequate reach for single-stud penetrations without requiring an extension. It is a practical everyday bit for rough-in work on residential and light commercial jobsites.

Key Features

• 1-1/4 inch cutting diameter for pipe and conduit rough-in applications
• 6 inch length provides reach for standard stud and joist penetrations
• 1/4 inch shank fits standard drill chucks and quick-change bit holders
• Designed for both fast rough boring and cleaner exit holes in wood
• Lightweight at 0.46 pounds for extended overhead or confined-space use

Compatibility

Designed as a standard wood boring spade-style bit compatible with any drill or driver accepting a 1/4 inch shank, including corded and cordless drills commonly used in framing and rough-in trade work.

Installation Notes

This bit is installed and used by licensed electricians, plumbers, HVAC technicians, and general contractors during rough-in phases. Ensure the workpiece is secured before drilling to prevent kickback. When boring through framing near structural members, follow local building code requirements for maximum hole size and edge distance. Inspect the bit for wear or damage before each use and replace if the tip is bent or cutting edges are chipped.

Technical Specifications

• Cutting Diameter: 1-1/4 inches
• Overall Length: 6 inches
• Shank Size: 1/4 inch
• Weight: 0.46 pounds
• UPC: 024721200563
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 88820