Features: Fit Stihl 025 023 021 MS250 MS230 Chainsaw Replace OEM For 1123 640 2074 / 1123-160-2050 / 0000 958 1022 / 1123 640 7102 Package Contents: 1 x .325"-7T Clutch Drum , 1 x Clutch , 1 x Clutch Washer , 1 x Worm Gear , 1 x Needle Bearing , 1 x E-Clip , 1 x Spark Plug