Copal Compur #3S (Diameter 60.4mm) Retaining Ring For Large Format Lens Fijinon

Shutter Lens Retaining Ring For Large Format Camera Lens Brand new one set lens retaining ring for Copal, Compur, Prontor #3S, internal screw thread diameter is 60.4mm, made of aluminum with high precision machining and black finished. Please note that this is 3S retaining ring, not #3. It's for some Fujinon lenses use, like Fujinon 250mm f/6.3 etc......We have Copal #0, 1, 3, 3S retaining ring available, please check out my store. Shutter Lens Retaining Ring For Large Format Camera Lens Brand new one set lens retaining ring for Copal, Compur, Prontor #3S, internal screw thread diameter is 60.4mm, made of aluminum with high precision machining and black finished. Please note that this is 3S retaining ring, not #3. It's for some Fujinon lenses use, like Fujinon 250mm f/6.3 etc...... We have Copal #0, 1, 3, 3S retaining ring available, please check out my eBay store.