- Holds drill bits, pen mandrel shafts, and workpieces up to 1/2 inch in diameter
- Easily open and close the three chuck jaws using the included key
- Compatible with any MT1 drill press, lathe, or mill
- Installs easily with the simple tap of a rubber mallet
- Designed for use with the WEN 3420T and 3421 Wood Lathe
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