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Irwin Speedbor Tri-Flute Wood Drill Bit
The Irwin Speedbor Tri-Flute wood drill bit series delivers fast, clean boring in wood framing, decking, and cabinetry work. This family is available in diameters ranging from 7/16" to 1-3/8", giving pros and DIYers a full lineup of large-diameter bits to match a range of jobsite boring needs on a single, easy-to-shop page. Irwin manufactures and distributes professional-grade hand tools and power tool accessories worldwide for trade professionals who demand superior performance and durability on the job. Every bit in this series shares the same Tri-Flute design, full screw self-feed tip, and grooved 1/4" hex shank, so no matter which diameter you select from 7/16" up to 1-3/8", you get the same dependable boring performance.
Key Features
- Trade Size Range: Available in diameters from 7/16" to 1-3/8" to cover a wide range of large-diameter boring needs in wood, with this listing offering 5 selectable sizes across that range.
- Tri-Flute Design: Speedbor Tri-Flute geometry delivers faster chip ejection than standard spade bits for quicker, cleaner holes across every diameter in the series.
- 3-Edge Cutting Spurs: Cutting spurs feature 3 cutting edges for added durability and cleaner entry cuts on each bit in the lineup.
- Full Screw Tip: A full screw tip allows each bit to self-feed through wood without heavy downward pressure, regardless of the diameter selected.
- Grooved Hex Shank: The grooved 1/4" hex shank prevents slipping in the drill chuck or bit extension on every size in the family.
- Universal Fit: Fits all standard 1/4" Quick Change chucks for fast bit swaps between sizes on the jobsite.
- Finish: Black finish is consistent across the entire Speedbor Tri-Flute series.
Technical Specifications
- Warranty: NLW
- Claims Needed: No
- Individual Vs. Set (Syndigo): INDIVIDUAL
- Net Lit-Ion Y/N: No
- Country of Origin: China
- Battery Included: No
- Charger Included: Yes
- Power Source: NON-ENERGY USING
Typical Applications
- Boring large-diameter holes in wood framing and studs
- Deck, fence, and post construction
- Cabinetry and furniture-grade woodworking
- Use with standard 1/4" Quick Change drill chucks and bit extensions
- Professional and DIY woodworking projects requiring multiple hole diameters from 7/16" to 1-3/8"
Why Irwin?
Irwin manufactures and distributes professional-grade hand tools and power tool accessories worldwide for trade professionals who demand superior performance and durability on the job. The Speedbor Tri-Flute design, 3-edge cutting spurs, full screw self-feed tip, and grooved 1/4" hex shank shared across every diameter in this series, from 7/16" to 1-3/8", reflect that same commitment to dependable, jobsite-ready performance for framing, decking, and cabinetry work.
Manufacturer Resources
Product Specs
- Warranty:
- NLW
- Claims Needed:
- No
- Individual Vs. Set (Syndigo):
- INDIVIDUAL
- Net Lit-Ion Y/N:
- No
- Country of Origin:
- China
- Battery Included:
- No
- Charger Included:
- Yes
- Power Source:
- NON-ENERGY USING
- Product Type:
- Drill Bit
- Product Finish:
- Black
- Department:
- Electrical
- Product Subgroup:
- Hole Saws & Bits
- list_batch:
- IRW-20260923
- Product Size:
- 15/16"
- Product Size:
- 11/16"
- Product Size:
- 7/16"
- Product Size:
- 1-3/8"
- Product Size:
- 1/2"
- Trade Size:
- 7/16" - 1-3/8"
- Finish:
- Black
- Series:
- Speedbor Tri-Flute