Pen Mandrels are used specifically for turning pens on your lathe and essential to the pen turning process. The Pen Mandrel Pro features a precision-machined steel shaft that is held in your lathe for accurate pen turning when used in conjunction with a live center (not included). Since the Pen Mandrel Pro has a morse taper on the end, there is no need foe a drill chuck! It fits directly into the morse taper on your lathe. Another unique feature of the Pen Mandrel Pro is the brass compression fitting. The fitting allows you to turn shorter blank lengths with no need for a wood spacer. Just slide the fitting onto the precision-machines shaft and tighten the fitting in the proper location for your pen blank.