Six sizes. Two clear kit options.
Prepare square mortises for furniture, cabinetry and joinery with a six-piece square-hole bit set. Choose the bits-only option or add the mortising holder.
Choose your setup
| Package | What is included |
|---|---|
| 6-Piece Bits Only | 6 square-hole bits. Holder not included. |
| 6-Piece Bits + Holder | The same 6 bits plus 1 mortising holder. |
Why you’ll love it
- Six useful sizes: A practical range for furniture joints, cabinet components and frames.
- Clear package choices: Keep your existing compatible setup or choose the holder-inclusive option.
- Square-mortise cutting design: The inner drill and outer chisel work together in a correctly installed mortising setup.
- Simple tool care: Clear chips regularly, clean and dry after use, and store the cutting edges securely.
Exactly what sizes do you receive?
Both packages include these six sizes. A 19 mm bit is not included.
| Included bit size | Quantity per set |
|---|---|
| 6.4 mm | 1 |
| 8 mm | 1 |
| 9.5 mm | 1 |
| 12.7 mm | 1 |
| 14 mm | 1 |
| 16 mm | 1 |
Check your setup with confidence
Bits-only: For an existing compatible mortising machine or correctly fitted mortising attachment.
Bits + holder: Includes a holder, but the holder must match your machine’s mounting dimensions and operating requirements. A handheld drill alone does not turn the outer square chisel.
Not sure about fit? Send us your machine model and mounting measurements before ordering. We will help you check. A verified clamping-diameter range is not currently available; we do not claim universal fit.
Setup & operation
- Confirm compatibility and follow the installation instructions supplied with your mortising equipment.
- Disconnect power before fitting or adjusting the drill, chisel or holder. Clamp the workpiece securely.
- Use the feed rate and chip-clearance procedure recommended by the equipment manufacturer. Check depth frequently.
- Stop the machine before clearing chips or inspecting the mortise. Keep hands away from moving and cutting parts.
Important: Do not strike the chisel or use a handheld-drill method unless the manufacturer explicitly approves that procedure. Wear suitable eye protection and follow your machine’s safety instructions.
Product details
Drill press, powered tools, workpiece, clamps and demonstration accessories are not included unless explicitly listed above.
Shop with confidence
Free worldwide shipping with tracking. Our 30-day return policy provides the eligibility rules and return instructions.
30-day return policy | Shipping information | Get fit and setup help