Specification Brand : HENTROY BulletPoint1 : Replacement trimmer head with 0.080" string for stihl battery trimmer FSA 57 BulletPoint2 : You need to check the serial number of the FSA 57. Only fits FSA 57 trimmers starting with serial number 5XXXXXXXX. BulletPoint3 : Replace OEM Parts No: 4009 710 2106 BulletPoint4 : Replacement C3-2 trimmer head for mowing and thinning work. Tap the mowing head to automatically adjust the trimmer line, refill the cutting line from the outside without opening the housing BulletPoint5 : Uses the green 2 mm nylon line. It is really easy to refill the Nylon with the easy fit replacement spools BulletPoint6 : Fit for Jonsered brushcutter BC2128 CC2126 CC2128 GTS2228;Weed Eater Replacement Head Size: M10*1.25 ; Holds 0.065-inch, 0.080-inch or 0.095-inch guage trimmer line BulletPoint7 : Double-checking your engine's model and part numbers is a simple step that can prevent any potential errors in your purchase. BulletPoint8 : Carburetor all-in-one tune up kit solve your machine's won't start, hard to start, leaking problems and more. BulletPoint9 : Durable Construction: Crafted with high-quality materials to withstand the demands of outdoor power equipment. Color : Black Color1 : Black Color2 : Blue Color3 : Orange CustomerPackageType : Standard Packaging CuttingWidth : 2 inches ExternallyAssignedProductIdentifier1 : 0761426454685 ExternallyAssignedProductIdentifier2 : 761426454685 ItemDisplayWeight : 0.2 ounces ItemName : HENTROY Trimmer Head Replacement for Stihl Autocut C3-2 Spool Fits FSA 57 FSE 52 Weed Eater String ItemPackageDimensions_Height : 12.5984 centimeters ItemPackageDimensions_Length : 4.699 centimeters ItemPackageDimensions_Width : 11.2014 centimeters ItemTypeKeyword : string-trimmer-replacement-parts ItemTypeName : Trimmer head Manufacturer : HENTROY Material : Nylon ModelName : C3-2 Trimmer head ModelNumber : C3-2 NumberOfBoxes : 1 OperationMode : Manual PartNumber : 4009 710 2106 PowerSourceType : fuel_powered ProductDescription : Replacement for Stihl FSA 57, FSE 52 Trimmer Head ProductSiteLaunchDate : 2024-06-12T02:10:45.656Z Style : Push SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1