1. Strong compatibility: The clutch assembly replaces the Stihl FR220 FS160 FS180 FS220 FS280 FS290 string trimmer.2. OE Number: The mower clutch replacement part number is 41191602001. Please make sure the OE number matches the part you are replacing.3. High Efficiency: During operation, the clutch assembly accurately transmits power from the input shaft to the output shaft, improving system efficiency.4. Noise Reduction: Compact structure and smooth operation, not easy to vibrate, and reduce noise when the equipment is running.5. Easy maintenance: easy to replace parts and reduce equipment maintenance costs, shorten maintenance time and improve equipment utilization. Specification: Item Type:Clutch AssemblyMaterial: MetalOE:41191602001Description: Kit to Meet Your Different Replacement Needs, Direct Replacement, Restoring Best PerformanceApplication:Replacement for Stihl FR220FS160FS180FS220FS280FS290 String Trimmer Package List: 1 x Clutch Set (3 Accessories) Note: 1.Please check your item's part number, the related information is for reference only.2.If you are not sure about the item, please contact us before purchasing to avoid unnecessary return, thanks ! Note: The data is manual measurement, please allow 1-72cm error, due to differences between light and screen, there will be a certain color difference, the specific received in nature prevail.