Related Clues:

• Bit players in a big machine
• Clock innards
• First, second, reverse, etc
• Some working parts
• They aren't major players
• They're engaged
• Lettuce sandwiches good for teeth
• Drive and reverse
• Gear elements
• Parts of the machinery on the margins of computer bugs
• They are kept in a box in the car
• Rages (anag.)
• Sarge (anag.)
• First and reverse, e.g
• Customizes