Specification Brand : Zhuried BulletPoint1 : Replacement part number :1X 313318001 311759008 Trimmer Head(10mm x 1.25 LHF) BulletPoint2 : Compatible with: For Ryobi Homelite Models: P2009, RY15523AVNM RY40006 RY4CCS RY251 Trimmer Head Assembly BulletPoint3 : Not suitable for model Volt Ryobi trimmer Not suitable for model Ryobi RY15523A Not suitable (8mm x 1.25 LHF) BulletPoint4 : Use for: 313318001 Double Line Trimmer Head For Mowing and Thinning. The Nylon Line is Automatically Adjusted By Tapping The Cutting Head Against The Ground. Suitable For Lawn Trimming, Around Trees, Between Shrubs Along Edges, Walls and Fences BulletPoint5 : Unconditional refund and replacement: Please check the size model before ordering,If this product broke or does not meet, please Contact us and send it back for a 100% refund no questions asked,we will reply to you within 24 hours, so that you can get a satisfactory answer. Thank you! BulletPoint6 : Thread Size: 10mm x 1.25 LHF,Please check the size model before ordering,Verify thread size,Avoid unnecessary returns! Color : black CompatibleMaterial : Carbon Steel ExteriorFinish : Machined ExternallyAssignedProductIdentifier : 7319626023557 ExternallyAssignedProductIdentifier1 : 645688650347 ExternallyAssignedProductIdentifier2 : 0645688650347 FitType : Universal Fit FuelType : Gasoline Hazmat1 : DANGEROUS GOODS IN APPARATUS Hazmat10 : DE_Unregulated Hazmat11 : EG_Unregulated Hazmat12 : ES_Unregulated Hazmat13 : FR_Unregulated Hazmat14 : GB_Unregulated Hazmat15 : IN_Unregulated Hazmat16 : IT_Unregulated Hazmat17 : JP_Unregulated Hazmat18 : MX_Unregulated Hazmat19 : NL_Unregulated Hazmat2 : UN3363 Hazmat20 : PL_Unregulated Hazmat21 : SA_Unregulated Hazmat22 : SE_Unregulated Hazmat23 : SG_Unregulated Hazmat24 : TR_Unregulated Hazmat25 : US_Unregulated Hazmat26 : ZA_Unregulated Hazmat27 : ZA_Unregulated Hazmat3 : 9 Hazmat4 : AE_Unregulated Hazmat5 : AU_Unregulated Hazmat6 : BE_Unregulated Hazmat7 : BR_Unregulated Hazmat8 : CA_Unregulated Hazmat9 : CN_Unregulated IncludedComponents : Comes with housing IsAssemblyRequired : 1 ItemDisplayWeight : 0.35 pounds ItemName : Trimmers Head 313318001 311759008 Fit for Ryobi Trimmer P2009 RY15523AVNM RY40006 RY4CCS RY251 ItemPackageDimensions_Height : 3.06 inches ItemPackageDimensions_Length : 4.62 inches ItemPackageDimensions_Width : 4.62 inches ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-replacement-parts ItemTypeName : FS91 Manufacturer : 01 02 015 Material : Nylon ModelName : FS91 ModelNumber : 313318001 311759008 NumberOfItems : 1 PartNumber : 313318001 311759008 PowerSourceType : battery, manual, PowerSource ProductDescription : Compatible with: For Ryobi Homelite Models: P2009, RY15523AVNM Trimmer Head Assembly Use for: 313318001 Double Line Trimmer Head For Mowing and Thinning. The Nylon Line is Automatically Adjusted By Tapping The Cutting Head Against The Ground. Suitable For Lawn Trimming, Around Trees, Between Shrubs Along Edges, Walls and Fences Package Includes: 1 X 313318001 Trimmer Head