After sorting all of your brass through the 3 plastic Shell Sorter™ pans, place the plate in either the blue or yellow pan. Run the contents of the black pan through this setup. The 9mm and 380 will fall through both the plate and pan into the bucket below. The 38 Super will remain suspended on the plate, usually by the rim. Similar to that of rimmed cartrirdges liek 38 Special etc. In sorting the contents of the black pan containing 9mm, 380, and 38 super, you may choose to use either the 380 or 38 super plate first. Because the 380 and 38 super plates look identical, we had a 1/4” hole drilled near the edge in the 38 super plates to differentiate the two.