Helical gear, 24 teeth, module 2, left hand
A left-hand helical gear generated from module, tooth count, and helix angle, with the tooth profile and bore as separate editable features.

Prompt used
Helical gear, 24 teeth, module 2, 20 degree helix angle, left hand, 20 mm wide, 12 mm bore.
Generated as shown, no manual cleanup.