Remember when you could turn your own pens, The WEN Wood Lathe Pen-Turning MT1 Mandrel allows users to take on small and intricate woodturning projects. The self-centering mandrel attaches easily to an MT1 tail and headstock with the shaft running through the hollow live center of the pens body. This mandrel features five bushings, a 7 mm Dia shaft, and a tapered more to maximize compatibility. The universal design fits with the majority of MT1 wood lathes on the market, but was designed specifically for the WEN 3420 8 in. x 12 in. Wood Lathe. Remember when you could easily adjust the length and tightness of your pen-turning mandrel, Remember WEN.