Lee Precision Lock Stud Holder

I came up with this model to make trimming reloading brass easier with my Lee Precision case length trimmer. This holds the end you would normally insert into a drill. But since I have it setup to work with my Lyman Case Prep Xpress I needed something to hold the chuck while saving my fingers. Pictures do a good job of explaining. The fit is tight needs to be pressed in on a hard surface the back should protrude a little when fully seated this allows for easier removal if need be. If you print m