Kassett SunRace CSMZ90 12-speed 11-50T black

Compatible with SRAM 12spd Derailleurs (not compatible with Shimano 12spd Derailleurs)HG Freehub Body Compatible (not XD Freehub Body Compatible) (not Microspline Body Compatible)Speeds: 12-Speed (Wide Ratio)Function: Fluid Drive PlusNumber of Teeth: 11-50TGear Combination: 11-13-15-17-19-21-24-28-32-36-42-50Spider Material: Aluminum / Red AnodizedSprockets On Spider: 7 Sprockets on 2 Spider CarriersSprocket Material: 1st~10th - Hi-Tensile Steel11th~12th - A7075 Aluminum / AnodizedLight Weight Holes: YESSpacer Material: Aluminum / Red AnodizedLock Ring: Aluminum / Red AnodizedChain Compatibility: 12 SpeedWeight: 586 g