Specification Brand : THTEN BulletPoint1 : Compatible with Black and Decker models: GH3000 LST540 GH3000R LST540B,easy to choose the right spool for your trimmer. BulletPoint2 : Easy Installation: simply push this trimmer head into the string socket and it automatically locks in place with assistance from the side push buttons BulletPoint3 : For Best Use: avoid using this accessory for edging, working alongside brick, chain, or wooden fencing BulletPoint4 : Products Include: The package contains 18 Pack Polycarbonate Blades BulletPoint5 : Pls contact us first when you get some problem, we will offer you assistance asap. Color : red+green ExternallyAssignedProductIdentifier : 8710783024019 ItemName : THTEN SF-080 Trimmer Replacement Blades Compatible with Black & Decker GH3000 LST540 GH3000R LST540B 18 Pack ItemPackageDimensions_Height : 10.5918 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 8.001 centimeters ItemTypeKeyword : string-trimmer-replacement-parts ItemTypeName : black and decker gh3000 Manufacturer : THTEN Material : Polycarbonate ModelName : black and decker gh3000 replacement blade ModelNumber : black and decker gh3000 blade NumberOfBoxes : 1 PartNumber : black and decker string trimmer parts ProductDescription : THTEN SF-080 Trimmer Replacement Blades Compatible with Black & Decker GH3000 LST540 GH3000R LST540B 18 Pack SupplierDeclaredDgHzRegulation : not_applicable