A30-1903-18—Adapter 3.0" for RCOS telescopes

Scope specific tube adapter to attach 3.0″ Feather Touch focuser to RC Optical Systems telescopes.  The adapter has a male thread of 4.0625X24TPI. 

Use with focuser FTF3015B-A
Known To Fit RCOS Telescopes
Thread on Entry (OTA | FRONT) Side of Draw Tube 4.0625X24TPI