Whats Shimano Flight Deck all about? There is a ribbon cable inside and what seems to be a button by the thumb of the shifter. What is it for? : r/bikewrench
The old Shimano "Flight Deck" | Flight deck, Shimano, Old things
Shimano Flight Deck 6500M Bracket SM-6500-M
Shimano Ultegra Flight Deck ST-6600 2x10s Control Levers Shifters L+R set Used | eBay