Nikon ES-1 Slide Copying Adapter for 55mm f2.8 or AF 60mm f2.8 Micro-Nikkor lens

Used in conjunction with the MICRO-NIKKOR 55mm f/2.8 lens or AF Micro-Nikkor 60mm f/2.8 lens. The Nikon ES-1 Slide Copying Adapter.

eBay