PSI Woodworking CJAWPEN Pen Blank Drilling Jaws For C Series PSI Lathe Chucks Size: 2-inch, Model: CJAWPEN, Tools & Hardware store Will hold a large variety of blank sizes depending on which chuck you attach these jaws. Eliminates the need to purchase a separate new chuck for blank drilling. Converts your existing chuck fast and easy. Inexpensive and accurate.