Lens ring has been used, but it looks and works good.  It has minor scratches from use. I don't see any dents. It works good. Threads are not damaged, or bent.

Holder ring is 24mm (series IV upper threads) .  Please note that adapter will be mailed as pictured, with original box. 

Adapter will hold one series 4 (IV) glass filter, diameter up to 20-22mm. Lower ring is 18mm ID and 20mm OD. Box states that it will fit Kodak Cine mag. 16.5mm SO 20,25 121,75  lens. . 

Shipping is free within USA and $10  worldwide.