Irwin 88818 Speedbor Wood Boring Bit 1-1/8 in 6 in

Product Description

The IRWIN 88818 Speedbor wood boring bit is a spade-style drill bit designed for boring clean or rough holes through wood framing, sheathing, and structural members. The 1-1/8 inch cutting diameter handles standard bore applications such as plumbing rough-in, electrical conduit pass-through, and HVAC duct penetrations. The 6 inch overall length provides reach through typical stud and joist bays, and the 1/4 inch hex shank seats securely in standard drill chucks and quick-change bit holders. Weighing 0.44 pounds, it is light enough for overhead work without adding fatigue. Licensed tradespeople and skilled DIYers working in wood framing applications will find this bit a practical, straightforward tool.

This bit is suited for residential and light commercial rough-in work where tradespeople need to bore through dimensional lumber, engineered wood products, or wood panel materials. Electricians, plumbers, and HVAC installers commonly use spade bits in this diameter range to create penetrations for wiring, pipe, or flex duct. The 6 inch length is appropriate for single-stud or single-joist passes without extension. The 1/4 inch hex shank is compatible with standard drill drivers and right-angle drill attachments commonly used in tight framing cavities.

Key Features

• 1-1/8 inch cutting diameter for standard rough-in bore applications
• 6 inch overall length provides reach through typical framing members
• 1/4 inch hex shank compatible with standard drill chucks and quick-change holders
• Spade-style design suited for fast rough holes or cleaner finished bores
• Lightweight at 0.44 pounds for reduced fatigue during extended use

Compatibility

Designed as a standard spade-style wood boring bit compatible with any drill driver or corded drill accepting a 1/4 inch hex shank.

Installation Notes

Installation is performed by electricians, plumbers, HVAC technicians, and carpenters during rough-in phases. Ensure the work piece is secured before drilling to prevent movement. When boring near existing wiring or piping, confirm clearances before proceeding. Follow applicable local codes, including NEC requirements, for minimum clearances between bored holes and the edge of framing members.

Technical Specifications

• Cutting Diameter: 1-1/8 inches
• Overall Length: 6 inches
• Shank Size: 1/4 inch hex
• Weight: 0.44 pounds
• UPC: 024721200556

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 88818