Specification Brand : String Trimmer Parts BulletPoint1 : OEM Genuine Echo Bump Knob Button BulletPoint2 : Part numbers: 215407, Old Part 215623, 69621952730 BulletPoint3 : For Models: GT-2000, GT-2400, GT-230, 21560055, 21560040B, 21560040. BulletPoint4 : More info below in description. BulletPoint5 : Let us know if you have any questions about this item or model. We are here to help! After receiving the item we will send you an ebook "Guide to Lawn Care" (free), the file (PDF) will be attached to the letter below. ExternallyAssignedProductIdentifier1 : 0792625601792 ExternallyAssignedProductIdentifier2 : 792625601792 ItemName : String Trimmer Parts 215407/215623 OEM Genuine Echo Bump Knob Button for GT-2000 GT-2400 GT-230 21560055 21560040B 21560040 and E-Book in A Gift ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 4.72 inches ItemPackageDimensions_Width : 3.54 inches ItemTypeKeyword : string-trimmer-replacement-parts Manufacturer : String Trimmer Parts PartNumber : 24012503 PowerSourceType : corded_electric ProductDescription : For Models: 21560040A, 21560040B, 21560055, GT-2000, GT-2400, GT-230 SupplierDeclaredDgHzRegulation : not_applicable