This hard wearing metal alloy optical mount adapter ring allows you to use an M42 lens with your Nikon AI camera, saving you the expense of a costly and irreversible conversion.
To use, simply attach the ring to your lens and then the lens to the camera. When you have finished remove both together.
This adapter ring is brand new, has never been used and comes in its original box. It is for use with M42 lenses and Nikon AI cameras.
Infinity focus is possible
M42 to Nikon AI Cameras Lens Optical Ring Adapter Adaptor
