Internal ring gear, 60 teeth, with mounting holes
A 60-tooth internal ring gear with six mounting holes on a bolt circle, the base part of a planetary gearbox.

Prompt used
Internal ring gear with 60 teeth, module 1.5, outer diameter of the ring 110 mm, 12 mm thick, six 4 mm mounting holes on a 102 mm PCD.
Generated as shown, no manual cleanup.