Screw-in cap with M40x0.75 male thread for Copal No.1 shutter

• Rear side - M40x0.75 male thread (match front thread of Copal No.1 shutter)
• Max. diameter - 44 mm
• Weight - 23 g

This cap will protect your shutter when no lens installed.

Also, you can use it as a blank to make lens adapter for Copal No.1 shutter.

If you don't have access to a lathe, we can make you necessary female thread upon request. Possible threads are up to M35.

Made of anodized aluminium.