Easily locate and drill pen blank centers and Drill through the exact center of your pen blanks with this simple but effective Pen Centering vise. By far one of the best selling pen vises available, this jig will be a go to tool when turning your pens. The jaws on the drilling center move in and out simultaneously to insure precision center drilling of your blanks each and every time you use the vise. Just set up the vise once and drill all of your blanks in the exact center. There is no need to change the setup regardless of the blanks size or shape. Holds blanks up to 1-1/2" square. The pen center vise includes a scrap board piece of mdf. It measures approximately 2" by 1/4".The scrap piece can be flipped, slid and reversed to get numerous uses out of a single piece. When you use up all of the surface, simply cut another piece out of 1/4" thick stock. Wooden base is removable and replaceable. If you need a larger base to clamp the vise to your drill press, simply remove the wooden base and replace it with a base made to your exact specifications