I have available a HSM35 Stepper motor (PAF-SI-HSM35) which is surplus to my needs. The HSM35 stepper motor can be fitted to Feather Touch focusers to support automatic motorised focusing. To be sure that this stepper motor is suitable for your configuration, I recommend further research
via this link here on the Starlight Instruments web site.
Asking $300 plus postage costs.
Clear skies,
Rodney