Kenko DG Extension Tube Set for Nikon F process_Black & White Paper but its plastic padding material

but its plastic padding material is showing its age

except with a name designed to float to the top of eBay SEO results

This genuine Pentax 6x7 rear lens cap protects the rear element and mount of a Pentax 6x7 lens when it's removed from the body

including the manual focus film cameras

Kenko DG Extension Tube Set for Nikon F process_Black & White Paper but its plastic padding materialA set of three extension tubes for Nikon F mount: 12mm, 20mm, and 36mm. These tubes have the electronic contacts necessary to maintain autofocus and autoexposure capabilities. If you're curious about dabbling in macro work, this is an inexpensive way to get started.