Flywheel Bicycle Flywheel 7-speed 21-speed Tower Wheel Flywheel 6-speed $ 21.88 Product information: Specification: 14-28 Type: Multi-stage flywheel Color: Shimano rotary flywheel Size: TZ500-7 spin flywheel, TZ500-6 spin flywheel Speed 6-speed/7-speed Flywheel bicycle flywheel 7-speed 21-speed tower wheel flywheel 6-speed Package: Alloy shift wheel x1
