microSHIFT Estes Thumb Tap Shifter - Left Double Optical Gear Indicator BLK

microSHIFT Estes Thumb Tap Shifter - Left Double Optical Gear Indicator Black. With a solid lever throw and crisp engagement responsive shifting is just a click away. microSHIFT Estes left thumb tap shifters are designed with a precision and durability not usually seen in entry level shifters. And the fact that they’re compatible with standard Shimano front derailleurs makes them an easy path to upgrade.