Shimano Tourney SL-TX30 Thumb Gear Shifter 3/6/7/18/21 Speed Bike Shift Set MTB
RIGHT SHIFTER:The right shifter is a trigger-type 6/7 speed shifter with one lever for down-shift and a thumb button for up-shifts. 3x6 Speed Shifter Set（3 Speed Left Shifter+6 Speed Right Shifter）.