This is a mod for the Dillon 650 progressive press.
Everyone has the problem with the spent-primer-bin that regularly shoots a spent primer into your room.
This adapter replaces the bin+mount and uses the same screws.
The only thing you need is some plastic-flexible hose with outside diameter of 12mm, and inside diameter of 8-9mm. (9-12 will be more flexible.)
I use this in combo with the strongmount and put a large bin underneath the press, that catches all the primers and filth from the primer-pocket.
(and off-course, this is much cheaper than the newly released one from DAA)