The Irwin Speedbor Replacement Countersink Bit is a tapered drill bit designed for drilling fast, clean pilot holes in wood. This replacement bit features widened flutes that work with an adjustable four-cutter counterbore to enable smooth countersinking. It works with your existing quick-change chuck system, making it easy to swap out when you need a fresh cutting edge.
The counterbore attaches to the shank flats with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth. Whether you’re doing DIY work or professional fastening, this bit delivers the pilot hole and counterbore function you need in a single tool.
Features and Benefits
- Widened Flutes: Designed to clear chips quicker for fast, smooth countersinking.
- Adjustable Four-Cutter Counterbore: Can be adjusted for controlled pilot hole depth, allowing you to customize cutting performance.
- Quick-Change 1/4 In. Shank: Reduces slipping in standard chucks and is compatible with all 1/4 in. quick-change chucks, including impact drills.
- Secure Hex-Screw Attachment: The counterbore fastens to the shank flats with two hex screws for a stable fit.
- Replacement Bit: Keep your workshop stocked with this compatible replacement for quick tool swaps between projects.
Specifications
- Brand: Irwin
- Model: 1882787
- Bit Type: Countersink Replacement Bit
- Size: 6 Wood
- Tapered Bit Diameter: 9/64 In.
- Shank Type: 1/4 In. Quick Change
- Counterbore: Adjustable Four-Cutter Design
- Fastener: Two Hex Screws
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of work.To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. For more information go to www.P65Warnings.ca.gov








