Wholesale Single Left 3-Speed Trigger Shifter for 21 Speed Bike

Spec: Single left 3-speed shifter, aluminum body, 1.5m shift cable included Features 1 Integrated brake & front shifter combo, compatible with 21-speed bike front 3-chainring system 2 Precision internal metal gears, crisp accurate gear shifting without lag 3 Dual adjuster screws for brake and shift cable, easy fine-tuning for smooth operation 4 Extended 3-finger brake lever for stable, powerful braking control 5 Clear transparent gear number dial for intuitive, error-free shifting 6 Sturdy wear-resistant aluminum housing, standard handlebar mount for easy replacement