"Twist-Lock" lens mount with 39mm hole for mounting enlarging lenses with 39mm mounting thread on Omega B-22, B-66, C-67, and Super Chromega C Dichroic enlargers.
Note: These lens discs are not threaded - a 39mm 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.
The used items may show signs of previous use but are in perfect working condition.
