Flat Lens Disc with 42mm hole to attach enlarging lenses with 42mm mounting thread, such as some versions of the Schneider Componon-S 135mm and 150mm lenses, to the appropriate lens mounts on the Omega D, E, and F series enlargers listed below.
For use with the lens mounts for the following:
Note: These lens discs are not threaded - a 42mm retaining ring is required to attach the lens to the disc. If you require a retaining ring for your lens, it may be purchased separately.