M77x0.75 to M67.7x0.7 step-down ring for Schneider Cinelux-Ultra 90mm F2 lens

• Front side - M67.7x0.7 (36tpi) female thread
• Rear side - M77x0.75 male thread
• Weight - 25 g

This adapter allows using front part of Schneider-Kreuznach Cinelux-Ultra 90mm F2 projection lens in front of lenses with 77mm filter thread.

Made of anodized aluminium.