Related Clues:
- Things in the works
- They have small roles
- Drive and reverse, for two
- Ratchets
- Part of a transmission
- Teeth that turn
- Teeth on a sprocket
- They have strong teeth
- Teeth that mesh
- First, low and reverse
- Ten-speed workings
- The ten of a ten-speed
- Factory wheels
- Car transmission choices
- Clockwork, essentially