This threaded adapter attaches to the rear of the SV070T refractor and has an M88.5X1 thread for attaching other 2.5" focusers on it. Use this ring for mounting our FSVF25 focuser or the Feather Touch 2.5" focuser that has the threaded M88.5X1 attachment thread (the one used on SV080ST-25SV).
