Product Information
- Extends any Forstner shank bit an additional 4 inches, Swift Bore (Registered Trademark)
- Ideal for use with any 3/8" shank bit
- High-carbon steel construction, precision ground and polished
- Two set screws and hex key included. To fasten the shank in place, use the hex key to tighten these screws
- Shank: 3/8-inch, length: 4-inch