IRWIN SPEEDBOR MAX SELF-FEED BIT - 1-1/2"The Irwin SpeedBor Max self-feed bit is engineered for fast, clean drilling of large-diameter holes in wood for plumbing, conduit, and electrical rough-in work. The aggressive screw tip pulls the bit through the material for less effort and faster cuts.
- Drills large-diameter holes in wood for pipe, conduit, and rough-in work
- 7/16" quick-change impact shank - milled shank eliminates runout and wobble
- Aggressive screw-pitch tip pulls the bit for faster drilling
- Three cutting edges extend bit life versus standard self-feed bits
- Replaceable screw tip; resharpenable cutting edges
- Cutting diameter: 1-1/2"
- Overall length: 5"