• Front side - M30x0.75 female thread
• Rear side - M42x1 male thread

Made of high quality aluminium alloy.

This adapter allows using microscope objectives with M30x0.75 mount thread on cameras with M42 lens mount thread (Zenit, Paktica etc).

Also, if you have M42 to your camera adapter, you can use microscope objectives with movie cameras, DOF systems and other devices.

This is cone-shaped adapter with 50mm cone height.