L H Dottie Co SDF458 Speed-d-feed Drill Bit 4-5/8 in

Product Description

The L H Dottie Co SDF458 is a Speed-D-Feed spade drill bit sized at 4-5/8 inches, designed for fast, clean boring through wood framing, joists, and studs. This style of bit is a standard tool for electricians, plumbers, and HVAC technicians who need to run conduit, pipe, or ductwork through structural lumber during rough-in work. The self-feeding tip pulls the bit through the material, reducing the force required and improving hole consistency in production drilling scenarios.

The SDF458 is well suited for residential and light commercial rough-in applications where large-diameter holes are needed through dimensional lumber or engineered wood. Electricians use this size when pulling larger conduit or cable bundles. Plumbers and HVAC installers use it when routing supply, drain, or refrigerant lines through floor and wall framing. It is sold as a single bit per unit.

Key Features

• 4-5/8 inch cutting diameter for large-bore rough-in work
• Speed-D-Feed self-feeding tip reduces operator push force and improves drilling speed
• Designed for boring through wood framing, joists, and studs
• Single-piece unit sold individually

Compatibility

Designed as a standard spade-style self-feed bit compatible with typical corded drill drivers and right-angle drills used in rough-in trade work. No specific model compatibility data was provided in the input.

Installation Notes

This bit is installed and operated by licensed electricians, plumbers, and HVAC technicians during structural rough-in phases. Use a corded drill or right-angle drill with adequate torque rating for large-diameter spade bits. Follow NEC, IPC, or IFGC clearance and hole-size requirements for the specific trade application. Inspect the bit for wear or damage before each use and remove it from service if the self-feed tip or cutting edges are compromised.