Thread reducing ring from M52x0.75 (outside) to M49x0.75 (outside)
Counter nut included
Suitable for next device:
and others with this type of thread
This is only a thread reducing ring.
To get a complete adapter for clip-on device it must be combined with
Rusan Q-R clamping adapter for devices with treed M52x0.75 (link)
in appropriate size according to day scope.