Adapter to use MS-MAG x1.35, MS-MAG x1.15 (for Leica M, not 1.3N) and other Leica viewfinder accessories including Leica Camera's own diopter lenses and magnifiers on Konica Hexar RF cameras.
Magnifier screws into the adapter which is then slipped (not screwed) onto the Hexar's eyepiece.