Each kit rebuilds 2 flipper mechanisms.
Used in the following Data East machines:
Robocop
Phantom of the Opera
King Kong
Back to the Future
The Simpsons
Checkpoint
Teenage Mutant Ninja Turtles
Batman
Star Trek
Hook
Please note: Some of the parts you are replacing my be goldish in color. The process that turned these parts this color contained lead. Your replacement parts may be "clear zinc" so as to not contain lead and to be RoHS compliant.
Data East/Sega reference #500-6306-20.