Beseler Dichro 45 Enlarger Head. I used to use this when I had a 45MXT enlarger - I used it as a VC head and much preferred it to the condenser as this one didn't heat up and distort the negatives, and I much preferred the built in filter system for VC printing, as well as the diffusion lightsource. Of course it can also be used for color printing! It has the 4x5 diffusion chamber and works well for all film from 35mm -> 4x5. I just fired it up and it is working fine - see the photos. I would like $100 for this enlarger head.