The Universal Pen Mandrel Kit by Planet Manufacturing is an innovative design that allows the majority of pen kits available to be turned on a single mandrel. The adjustable shaft length enables the user to decide whether it is desirable to turn one or two pen components at a time. Each kit is supplied complete with 3 parallel spacers for turning pens with an outside barrel diameter of 7mm and 4 cones for barrel diameters of 7.5 - 12mm. The cones have a 90 degree included angle which will not mouth the barrel or cause any other damage in normal use. The kit comes supplied with additional lock nut kit for use with larger blanks and a leaflet explaining how to use the kit.