Enrilior 3x7 Bicycle Gear ShifterOne Pair Outdoor Mountain Bicycle TX-30 Thumb Speed Shift Lever and Set

Features: Left shifter is a friction/ ratcheting thumb lever for triple cranksets. Right shifter is a trigger-type 7 speed shifter, with one lever for down-shifts and a thumb button for up-shifts. Made of durable aluminum alloy material, it works perfectly for optimum performance and maximum safety and longevity. 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. Suitable for mountain bike, city bike, road bike, folding bike, etc. Specifications: Model: SL-TX30 Thumb Gear Shifter 3X7 Speed Material: Aluminium Alloy Color: Black Mount: Left (3 Speed)+ Right(7 Speed) Clamp: 22.2 mm/ 0.87 inch You can choose: 1. Only left gear shifter -3 speed 2. Only right shifter -7 speed 3. Left and right shifter -3X7 speed Packing List: 1 Pair TX30 Thumb Gear Shifter (Left +Right Shifter)