Brand SRAMItem type CassetteItem name PG-1230Description EagleSeries name NX EagleSpeed 12 speedRatio 11-13-15-17-19-22-25-28-32-36-42-50Color BlackTeeth 11-50TTechnology Power GlideBody SRAM/Shimano 8/9/10 speed onlyGroup comp - SRAM SRAM NX Eagle, 12-speedOptimized for E-Bike: Yes