Bicycle Speed Shifter Levers Combo 21 Speed Bike Gear Shifters Cycle Brake Lever Transmission Black 2pcs Easy to install: This bike gear shifter is easy to install, and it can work after installing the transmission correctly and easilyFlexible gear position: The gear position of the bicycle lever transmission is flexible, the gear shift is stable, and the index is obviousSpeed The shifter lever pods is suitable for the bike of front (left) 3 and rear (right) 7, enables different flexible driving experience for ridersComfortable handle: The brake lever provides ergonomic finger position and trigger handle, allowing you to work comfortablyVisual indicator light: Bicycle speed shifter has a visual gear indicator light, it is comfortable to switch and clear at a glanceFeaturesBicycle speed shifter-Color: Black.-Material: Aluminum alloy,plastic.-Size: Suitable for 22.2mm handlebars.Speed: 3 x 7 speed (left 3 speed, right 7 speed)Weight: about 360 gramsPackage Including2 * Bicycle speed shifter(left 3 speed, right 7 speed)