Features: 1Application: Clutch sprocket bearing kit is suitable for STIHL MS290 MS310 MS390 029 039 Chainsaw, ensuring a smooth and reliable operation. 2Part Number: OEM number of clutch sprocket bearing kit for reference is 1125?640?2000. Please double check the part number of your item before ordering. 3Correct Sprocket Size: With a sprocket size of 3/8in and 7 teeth, the chain sprocket bearing set is optimized for efficient cutting performance. 4Long Durability: This set is highly impact and scratch resistant, ensuring long term durability and reliable performance in tough environments. 5Direct Replacement: Professional manufacturing, this is your ideal option and replacement for your rebuild, repair, and maintenance needs. Item Type: Clutch Drum Sprocket Material: Aluminium Alloy OE: 1125-640-2000 Compatible: Fit for STIHL MS290 MS310 MS390 029 039 Chainsaw Package Included: 1 x Clutch Assembly Cover 1 x Clutch Assembly 1 x Clutch Drum Sprocket 2 x Sprocket Bearing