Irwin 88816 Speedbor 1 Inch Spade Drill Bit 6 Pack

Product Description

The IRWIN INDUSTRIAL TOOL CO 88816 is a 1-inch spade drill bit sold in a package of 6, designed for boring large-diameter holes through wood and wood-based materials. Part of the Speedbor line, this bit is built for use in standard power drills and driver tools common on residential and commercial job sites. At 0.7 pounds for the package, it is lightweight and easy to transport between work areas. Electricians, plumbers, carpenters, and HVAC installers regularly use spade bits like this one when routing conduit, pipe, or ductwork through framing members and subflooring.

This spade drill bit is suited for applications where large, clean holes are needed through dimensional lumber, engineered wood, OSB, and similar materials. The 1-inch diameter makes it a common choice for running electrical cable, small-diameter piping, or low-voltage wiring through wall studs and floor joists. The 6-piece pack format supports crew use or restocking a tool bag or service van with multiple spare bits ready for the next job.

Key Features

• 1-inch cutting diameter for standard large-bore hole applications
• Speedbor design optimized for fast material removal in wood
• Package of 6 bits for crew use or replacement stock
• Compatible with standard power drills and impact-rated drivers
• Lightweight package at 0.7 pounds for easy transport

Compatibility

Designed as an OEM-style replacement spade bit fitting standard 1/4-inch hex or round shanks commonly used in corded and cordless power drills across residential and commercial construction trades.

Installation Notes

Spade bits of this type are installed by electricians, plumbers, carpenters, and HVAC technicians when boring through wood framing. Ensure the drill is unplugged or the battery removed before changing bits. When drilling near existing wiring or plumbing, follow applicable NEC and IPC guidelines for clearance and protection. Use appropriate backing material to minimize blowout on the exit face of the workpiece.