This adapter allows you to use the ESATTO 2" robotic microfocuser with the Borg 55mm fluorite lens and 7880 reducer to create the Borg 55FL f3.6 astrograph. This set is composed of 5 rings and adapters. In order to complete the Borg 55FL f/3.6 Astrograph, you have to add the Borg 2555 55FL lens and Borg 7880 0.8x reducer for 55FL and Borg 7352 rotator.
The Borg reducer (7880) has to be connected after the rotator. In the picture below you can see how to connect the Borg 55FL lens. PLUS 80mm support rings are not included with this kit.