Each flipper rebuild kit rebuilds 1 left & 1 right flipper assembly.
Used in the following Data East machines:
Star Trek
Hook
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.