Feather Touch fine focuser for C-9.25 SCT

Feather Touch® Micro Telescope Focuser for Celestron C925 Schmidt-Cassegrain Telescope
If your telescope is less than a few years old, check the style of the back cell to see which version of the Feather Touch® SCT Micro Focuser you need: If your telescope has a flat back, you need this Micro Focuser. If your telescope has a triangular pattern on the back, you will need the CPC-version of the Micro Focuser: Starlight Instruments Feather Touch fine focuser for CPC 9.25 SCT