WEN LA136K 12Inch Keyed Drill Chuck with MT1 Arbor Taper

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