spool holder adaption for Rostock max v3

It is a spool holder adaption for rostock max v3 spool holder. The original holder is square and somewhat frictional. This holder adaption is made to be round and easier to rotate with. This design requires 6 piece of 4-40 screws at least 3/4 inch long and a pair of skateboard bearings. You will also need to use a die of 5/16-24 and a tap of the same size to make threads on the end of the rod and inside the end cap.