Specification Brand : YANYING BulletPoint1 : 1.Replaces: X047000841 Includes adapters to fit most premium trimmer brands Compatible with Stihl, Husqvarna, Tanaka, Echo, Shindaiwa, Redmax, Maruyama & Honda; BulletPoint2 : 2.Holds 20' of .095" line. Max line size .130" Reload in 30 seconds or less, Recommended for trimmers with engines 25cc and larger, Does not fit curved-shaft trimmers. BulletPoint3 : 3. 78890-21001E Trimmer Head Replacement Compatible with Echo Shindawa Speed-Feed 450 High Capacity Trimmer Head High Capacity Compatible with Speed Feed 450. This Universal bump feed trimmer head allows you to easily load up to 20' of trimmer line in under a minute, with no tools or disassembly needed. BulletPoint4 : 4. With features like a split spool to reduce line welding and thick, heavy duty eyelets, the rugged construction of this head is designed for all-day commercial use. Comes pre-loaded with .095" trimmer line. BulletPoint5 : 5.Fasy and easy Rapid load system. This is Non-Original Aftermarket Parts. ExternallyAssignedProductIdentifier : 00197111669827 ExternallyAssignedProductIdentifier1 : 0750266571812 ExternallyAssignedProductIdentifier2 : 750266571812 IsAssemblyRequired : 1 ItemDisplayWeight : 0.46 kilograms ItemName : YANYING 450 Trimmer Head for Speed Feed for Echo SRM-266 SRM-266S SRM-266T SRM-266U SRM-280 SRM-280S SRM-280T and more,Weed eater head,Bump head, String Trimmer Replacement Part ItemPackageDimensions_Height : 22.098 centimeters ItemPackageDimensions_Length : 7.493 centimeters ItemPackageDimensions_Width : 15.3924 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-replacement-parts Manufacturer : YANYING ModelNumber : Husqvarna 324RX HDA 224L 55X 531008681 NumberOfItems : 1 PartNumber : Husqvarna 324RX HDA 224L 55X 531008681 PowerSourceType : manual ProductDescription : Features: - Fasy and easy Rapid load system - Holds 20' of .095" line. Max line size .130" - Reload in 30 seconds or less, Recommended for trimmers with engines 25cc and larger - Recommended line diameter (in.) .080 Does not fit curved-shaft trimmers PLEASE NOTE: Consult owner's manual for proper part number identification and proper installation. It may look like the right part, but it may not fit your particular machine ProductSiteLaunchDate : 2019-07-22T08:25:55.424Z RecommendedUsesForProduct : Lawn Mower SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1