For STIHL 017 018 MS170 MS180 MS250 021 023 chainsaw parts
Replace For 1123 640 2005
Clutch drum feature: 3/8” pitch, 6 tooth
Sprocket rim feature: 3/8LP Picco, 7 Tooth, inner hole 17mm
Include 1 x 3/8" 6T Clutch Drum, 1 x Clutch Drum, 2 x Sprocket Rim, 1 x Oil Hose, 1 x Needle Bearing