Another great open-source option, especially popular for Steam Deck users.
A free, open-source alternative that handles RAR files easily. 9G95L58ER85T85R84849R95.part1.rar
How to Extract Multi-Part RAR Archives Like "9G95L58ER85T85R84849R95" Another great open-source option
Ensure all pieces of the archive (e.g., .part1.rar through .partXX.rar ) are in the same folder . 9G95L58ER85T85R84849R95.part1.rar