Shimano CS-S500 Alfine 20T without Guard Single Sprocket

FEATURES

Sprocket
Revised tooth profile to prevent chain skip
Special single gear design with chain tensioner
18T, 20T available

SPECIFICATIONS

Compatible Chain    Super Narrow HG-X 10-speed/ Super Narrow HG 9-speed
Number Of Speeds    1
Cassette Or Freewheel    Single sprocket
Finish    Chrome Plated,-