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
Shimano Flight Deck SC-6502 Computer Head 8-10sp - $89.99
Shimano 105 Shifter and Brake levers ST-5500 2 x 9 speed flight deck | eBay
Shimano Ultegra 6700 Flight Deck plate LordGun online bike store