The Shimano ST-EF500 dual brake/shift lever features reach adjust technology and an optical gear display. 4-finger lever. Compatible with cantilever, roller, linear-pull and mechanical disc brakes. Equipped with a reach adjust mechanism that allows for the distance from handlebar to lever to be adjusted in order to suit any hand size and riding preference. The optical gear display tells you which gear position is selected while riding. EZ Fire Plus design features 2 shift levers, with the upshift lever located at the top where it is easy to see.