Shimano Tourney MF-TZ500 7-speed multiple freewheel, 14-28 tooth
A reliable 7-speed screw-on freewheel
Engineered for smooth chain movement up or down the block
For 7-speed gear systems
Can be easily installed onto compatible screw-on type hub
Suitable for mountain bikes and a wide range of other cycles
Replaces MF-TZ21 freewheel