Robert Sorby's Pen Jaws have been designed to allow for easier and more controlled drilling of pen shafts. A 'V' groove in each of the two jaws ensures a more secure and firmer grip, whilst drilling on the lathe enables the turner to hold the pen blank centrally, allowing for more accurate drilling and a greater control of the process. To assemble, the two jaws are quickly and easily mounted onto the chuck face with two clamping screws - designed to take heavy usage. To operate, simply mount a drill chuck into the tail stock of your lathe and slide up the drill bit to the pen blank mounted in the pen jaws. Lock down the tail stock and wind and drill out the hole to take the brass tube. Being mounted on a lathe the turner has more control over motor speed and a much better control of the feed speed.