1. 325-7T Drum Clutch Sprocket Kit for Stihl MS271 MS291 MS 291 271 Chainsaw Parts 2. Our products are made of suitable materials that are designed to be reliable and durable. 3. Applicable models: For Stihl MS271, MS291. 4. Part number: 1121 640 2001. 5. Size: 0.325 in, 7 teeth. 6. Packing List: 1 x Clutch Drum, 1 x Clutch Assembly, 1 x Needle Bearing, 1 x Clutch Washer, 1 x E-clip. 7. The materials used are designed to have a long service life and can effectively resist external damage and fractures. 8. The goods are strictly tested before shipment. 9. Please check that parts and models are compatible before ordering to ensure that the correct accessories can support the proper functioning of the product. 10. Specifications: Size: 0.325", 7 teeth; Packing List: 1 x E-clip, 1 x Clutch Washer, 1 x Needle Bearing, 1 x Clutch Assembly, 1 x Clutch Drum. 11. Equipment: Stihl MS271, MS291 series chainsaws. 12. Size: 0.325 in., 7 teeth. 13. Replace OEM for: 1121 640 2001. 14. Include: 1 x Clutch Drum, 1 x Clutch Assembly, 1 x Needle Bearing, 1 x Clutch Washer, 1 x E-clip.