microSHIFT TS39 Left Thumb-Tap Shifter - Double Optical Gear Indicator Shimano Compatible Black. Compatible with most Shimano drivetrains microSHIFT thumb-tap shifters feature durable bodies with ergonomic shift levers making it easy to get your bike going.Includes shift cable
Compatible with 2x mountain front derailleurs
- TECH SPECS
| Shifter Style | Thumb |
| Front Der/Shifter Compatibility | Shimano Mountain |
| Double or Triple | Double |