Retaining ring for Compur #2 shutter (M50x0.9 thread)

This retaining ring allows securing Compur #2 shutters in their lens boards.

• Female thread - M50x0.9 (28tpi)
• Rim diameter - 52.5mm
• Weight - 5 g

The retainer is machined of high quality aluminium alloy.

Known compatible shutters:

• Compur #2