• Front side - 54mm inner diameter
• Rear side - M72x0.75 male thread

This adapter allows using projection lenses and anamorphic attachments with 54mm rear diameter on lenses with M72x0.75 filter thread.

Attachment is secured with 3 thumb screws. There is intermediate flat spring to prevent damage of the attachment body.

The adapter is machined of high quality aluminium alloy. Weight is 47 g.