Shimano SL-M3100 Alivio shift lever, 3-speed, band on, left hand

From Shimano:

• Great value Alivio 3-speed mountain bike Rapidfire lever for crisp gear shifting
• 2-way release allows shifting from various riding positions; the upper lever still performs the same shift function, but it can now swing in either direction allowing it to be released by the thumb or index finger
• Pod design allows the use of this shifter with any brake lever
• Low-friction design means that shifters have a light and responsive short-stroke action that reduces shifting effort
• Easy to read optical gear display
• Barrel adjuster for fine gear tuning
• Complete with inner and SP41 outer cables
• Easy access clamp band adjustment for quick set up