Clutch Drum Spur Sprocket for chainsaw models CS-260T, CS-260TES, CS-270WES, CS-271T, CS-280TES, CS-281WES, CS-2600ES, 269TS, 269TCS.Fits OEM part numbers A556000091 and A556000092.Designed with 3/8LP-6T configuration.Not compatible with 1/4"-8T or A556000101.Includes 1 x Clutch Drum and 1 x Needle Bearing.proper fit by comparing size, shape, and appearance with your existing part before installation.