The Shimano Deore 10 Speed Rapidfire Shifter Pods SL-M591 feature 2-way release for cost effective Dyna-Sys 10-speed shifting performance.

Key Features:

• 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
• Dyna-Sys 10-speed compatible - for use with precision 10-speed MTB drivetrains
• Pod design allows the use of these shifters 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