Freewheel SunRace MFR30 7-speed 13-25T CP (threaded)

Speeds: 7-SpeedType: THREADED (not compatible with splined hubs)Thread is the same as Shimano TZ500, so it is compatible with most threaded hubsFunction: Fluid DriveLockring Type: YESNumber of Teeth: 13-25TGear Combination: 13-15-17-19-21-23-25Sprocket Material: SteelSprocket Finish: ChromeSpacer Material: Engineering Polymers Chain Compatibility: 7.3mm 6/7/8-speedWeight: 440 g