Switching from the stile cut to the rail cut is simple by rearranging the cutters and bearing on the arbor.  Because the profile and the cope are cut with the same cutter, you are sure to get a perfect fit. The assembly order for each setup is shown in the drawing. Use the pilot bearing only for cuts on curved rails or stiles, straight cuts with a fence.  For use in a table-mounted router.  Works on 5/8″ to 7/8″ material.  Carbide tipped.