1 (one) Nikon BD DIC Objective Lens Nosepiece With Prisms for 5X, 10X, 20X 40X and 100X objectives.  I am the original owner.  This was used on my Nikon Microphot FX.  The 10X and 100X are combined.  Glass has no scratches and no fungus.  Saw light use.  The 5 and 20X positions have a dab of silicon to keep the prisms firmly in place.  They have been used for many years with no ill effects. Nikon uses black silicon and is a bit neater and that could be accomplished by the new owner but the prisms work perfectly as is. What you see in the photos is what you are buying.  Nothing more or less is included.  Please see my other listings for the objectives (if still available) that match this nosepiece.