AM SL SHIMANO ISLM5100RAP

Shimano Deore SL-M5100 Rapidfire Plus Shifting Lever - 11-speed - right
 
Shimano Deore SL-M5100 Rapidfire Plus Shifter
Shimano Deore SL-M5100 shifter is characterized by its simple and smooth operation so that the rider can concentrate solely on the trail ahead. Proven features such as Rapidfire Plus for shifting a maximum of 3 gears simultaneously and 2-Way-Release are of course adopted by the correct 11-speed gear lever.

2-Way-Release
2-Way- Release allows the cable to be released by pushing with the thumb or pulling with the index finger. So you don't have to adapt your riding style to the rear derailleur, but the rear derailleur adapts to your riding style.