Bicycle Brake Levers Shifter, 3×7 21 Speed Mountain Bike shifters Set with Gear Indicator,Cable Thumb Derailleur Lever Transmission for Moutain Bike, Road Bike, MTB

About this item HIGH QUALITY MATERIAL: All made of good quality materials, brake lever is made of aluminum alloy, durable and not crack or break or get rusting,it works perfectly for optimum performance and maximum safety and longevity. OPTICAL GEAR DISPLAY INDICATOR: Designed with optical gear display indicator to show you the gear position,Confirm the gear position with number at a glance.It is marked with 3speed or 7speed and right or left respectively, you can easy to distinguish. MULTIFUNCTIONAL: You can use only left gear shifter for 3 speed and only right shifter for 7 speed and both left and right shifter for 3×7 speed.With integrated design, two functions can be used. APPLICATION: Suitable for MTB mountain bike, road bikes, variable speed bicycle, folding and city bikes. PACKAGE INCLUDING: 3×7 speed mountain bike left gear shifter with brake cable & visible optical gear display indicator.