Asahi Bellows Unit winder but you'll need to use

but you'll need to use the included external viewfinder to frame your shot (it's too wide for the camera viewfinder)

but clean glass and excellent function

Extends to approximately 3

that's just how they're made

It’s not huge or anything

Asahi Bellows Unit winder but you'll need to useThe Asahi Bellows Unit is a bellows for M42 thread mount cameras and lenses. Provides more than 2x magnification with 55mm lenses, according to the on rail scale; should do similar work with other lenses of similar focal length. Smooth geared adjustment, good locks. There is a tripod socket at the camera end, but it's pretty minimalist, so you may want to stick with smaller lenses. With original box.