Fitment: For MS271 MS291 Series Chain Saws Replace Part Number For 1121 640 2001 Type: .325″ Pitch, -7 Teeth Note: This item does not fit part number 1121 640 2000 Description: – The highest after-sales warranty – Low cost, highest cost performance – Brand new, high quality, durable and easy to install Package Included: 1 x Clutch Drum 1 x Clutch Assembly 1 x Washer 1 x E-Clamp 1 x Needle Bearing Notes: – If you are not sure whether the item is 100% fit for your vehicle before purchasing. – Please allow 1-3cm differs due to manual measurement. – Due to the difference in display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.