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Router Bit Shank Sizes: Metric vs Imperial
This page provides standardized, specification-oriented reference information.
Specifications
| Specification | Value |
|---|---|
| Imperial Shanks | 1/4 inch, 1/2 inch |
| Metric Shanks | 6mm, 8mm, 12mm |
| Notes | Choose the correct collet; never force a near-fit shank into the wrong collet size. |
Availability
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Sources
- Manufacturer documentation
- General router safety guidance
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