34.6mm bore to M52x1 male thread adapter for shutters

• Front side - 34.6mm bore
• Rear side - M52x1 male thread

Made of high quality aluminium alloyWhy aluminium?.

This adapter allows using some shutters on focusing helicoids with M52x1 thread. Take note that this adapter has no female thread - it has just a round hole. So, your shutter should have retaining nut to mount it.

Suitable shutter(s):

• Compur #0
• Copal #0
• Prontor #0