Model: SL-S503
Speed: 8 Speed
Compatible for: Shimano SG-S501, NEXUS INTER-8
Shimano 2-way release feature
Optical gear display
Drivetrain Speeds: 8
Color: Black
Right shifter only, come with inner cable and hose
Precise Shimano Rapidfire shifting developed for Alfine and Nexus Inter-8 pitch ratio
Note: Just for "Internal Gear System"