4 ball trough opto transmitter and receiver board set.  These boards come with new rubber grommets and metal spacers.

Supported Game List: 

• Attack From Mars


• Cactus Canyon


• Champion Pub


• Cirqus Voltaire


• Congo


• Dirty Harry


• I500


• Jackbot


• Johnny Mnemonic


• Junk Yard


• Monster Bash


• Medieval Madness


• NBA Fastbreak


• No Fear


• Revenge From Mars


• Safe Cracker


• Scared Stiff


• Star Wars Episode 1


• Theater of Magic


• Tales of the Arabian Nights


• Who Dunnit

Williams reference #A-18617-1 & A-18618-1.