SummaryThis is to adapt the 23mm OD body mini drill to the M19 threaded Model 220 Dremel Drill press.InstructionsThis part is printed in two parts and then assembled. Use glue to attach one piece to the other. I actually heated the inside and flared the hex nut so it would not detach during drilling. I uses and M3 nut and socket head cap screw to keep the body in place. Enjoy!!