A tool for finishing and polishing the end face of a pinion. A facing tool is made of soft steel or bell metal and used with coarse red stuff for squaring up the pinion face. For finishing or polishing it is made of bell metal and used with slightly moistened diamantine. In form the tool is a short tube with a slightly tapered hole to allow the pinion arbour just to pass through the small end, the end wall of the tube being the finishing face, having itself been finished dead square. When facing a pinion, the pinion arbour is supported at one end in the turns and at the other by the facing tool, the pinion being rotated by use of a ferrule and bow. To keep the facing tool true to the work, the tube itself may be pivoted in a hand frame.