3X7 Speed Grip Shift MTB Bike 21S DIP Bicycle Twist Gear Shifter
Bicycle Twist Shifter Lever 3×7 3×6 Speed Revoshift Lever 21 18 Speed Twist Grip Gear for MTB Mountain Bike 1 Pair. Model: Bicycle revoshift 3×7 speed left and right twist gear shifter, incuding 1 pair(one left 3 speed and one right 7 speed).