[Reliable material]The bike thumb gear shifters is made of durable aluminum alloy material, it works perfectly for best performance and maximum safety and longevity.
[How to use] Right shifter is a -type 7 speed shifter, with one lever for down-shifts and a thumb button for up-shifts. Left shifter is a friction/ ratcheting thumb lever for triple cranksets.
[3 gear design] You can use only left gear shifter for 3 speed and only right shifter for 7 speed and both left and right shifter for 3x7 speed.
[Convenient to use] It can help you quickly control the gear of the bicycle to adjust the speed of the bicycle, so that the ride is more stable and safe.
[Wide application] Suitable for mountain bike, city bike, road bike, folding bike, etc.