Meet the Irwin Speedbor 15/16 in. x 6 in. Carbon Steel Wood Boring Bit with Quick-Change Hex Shank—built to deliver fast, accurate holes in wood projects of every scale. This bit combines a large, clean cutting diameter with a durable carbon steel body, designed to handle repeated use in softwood and hardwood alike. The quick-change hex shank means you can swap bits in moments, keeping your workflow uninterrupted.
Designed for woodworkers who value speed without sacrificing precision, this bit slices through material with minimal wandering and leaves crisp edges. The 2-3/4" flute length channels wood chips efficiently, while the 6" overall length provides reach for deeper holes in cabinetry, furniture building, and construction tasks.
Key specifications
- Drill Size: 15/16 in
- Overall Length: 6 in
- Flute Length: 2-3/4 in
- Shank Diameter: 1/4 in
- Shank Type: Quick-Change Hex Shank
- Material: Carbon Steel
- Number in Package: 1
- Packaging Type: Carded
- Brand Name: Irwin (Speedbor)
Why this bit stands out
- Large-diameter, clean-hole capability: Ideal for passing conduit, wiring, or dowels through thick sections of wood with fewer passes and less effort.
- Rapid bit changes: Quick-Change hex shank minimizes downtime between holes and setups, boosting productivity on busy job sites.
- Robust construction: Carbon steel offers solid wear resistance for repeated use in demanding woodworking tasks.
- Long flute design for efficient chip removal: Clearer holes with reduced friction, even in dense hardwoods.
Ideal use cases
- Electrical and plumbing through-holes in cabinetry, furniture frames, and framing where larger clearance is needed.
- Fast, accurate joinery and doweling where a precise 15/16" hole is required.
- DIY projects that involve running wires, mounting hardware, or creating pass-throughs in wood panels and shelves.
Tips for best results
- Center and clamp the workpiece to prevent tear-out, especially on end grain.
- Consider drilling a shallow pilot hole if you’re working with very hard woods to reduce wandering.
- Use steady, moderate drill speed and let the bit do the cutting; avoid applying excessive downward pressure.
- Backer board beneath the workpiece can improve edge quality on the exit side of the hole.
The Irwin Speedbor 15/16 in. x 6 in. Carbon Steel Wood Boring Bit with Quick-Change Hex Shank is a purpose-built tool for builders, cabinet makers, electricians, and serious DIYers who demand reliable performance when enlarging holes in wood. When you need a large, clean hole with quick bit changes, this Speedbor bit delivers the practicality and durability that keeps your projects moving forward.
