Here we have very, very nice Nikon PB-4 bellows & PS-4 slide copying adapter which is in absolutely pristine condition. I used it for one job with my D7000 copying about 100 slides with my 60mm Micro-Nikkor. Worked very well. IMO it ought to be used with a FF digi or film camera and not a crop-sensor camera...but it can be done well.
Includes the boxes and the instructions for the slide copying adapter. Wrapped in the original plastic bags. A very clean set that is ready to go. No issues.
The PB-4 is a superb macro bellows and this particular one looks like it's near mint. They normally show wear along the geared rail around the 180mm end, this one has none. If I didn't already have 2 of these...