Feature●?LEFT/RIGHT SHIFTER?Right shifter is a trigger 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.●?3X7 SPEED?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.●?HIGH QUALITY?Made of durable aluminum alloy material, it works perfectly for optimum performance and maximum safety and longevity.●?WIDE APPLICATION?Suitable for mountain bike, city bike, road bike, folding bike, etc.●?GUARANTEE?If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.Description