Flat Lens Disc with 55mm hole to attach enlarging lenses with 55mm mounting thread to the appropriate lens mounts on certain Omega D, E, and F series enlargers.
For use with the lens mounts for the following:
Note: These lens discs are not threaded - a 55mm lens flange is required to attach the lens to the disc. If you require a retaining ring or lens flange for your lens, it may be purchased separately.