【Compatible Models】Serrated blades fit for SF-080,SF-080-BKP polycarbonate head,compatible with black decker GH3000, GH3000R, LST540, LST540B String Trimmer.They are designed to fit black decker trimmers, so you can be sure that they are compatible with your equipment.These replacement blades from black decker are perfect for keeping your trimmer in peak condition. 【New Upgrade】32 Pack replacement blades are made of polycarbonate material for extra sharpness.Serrated Edges are ideal for thicker grasses that your strings may not be able to handle. 【Easy Installation】The upgraded version of the replacement blade reduces the cumbersome installation process and is easy to install.Trimmer Head fixed dual blades don't worry about getting stuck during installation. 【Efficient Cutting】Use centrifugal force and aerodynamics to reduce resistance and realize rapid cutting. High-quality materials make you safer and has good abrasion resistance,to ensure it can serve you for a long time. 【Package Includes】Polycarbonate replacement blades * 32，Screw * 4 pack，Wrench * 1.If you have any installation or model problems, you can contact us, we will give you a satisfactory answer within 24 hours. 【Compatible Models】Serrated blades fit for SF-080,SF-080-BKP polycarbonate head,compatible with black decker GH3000, GH3000R, LST540, LST540B String Trimmer.They are designed to fit black decker trimmers, so you can be sure that they are compatible with your equipment.These replacement blades from black decker are perfect for keeping your trimmer in peak condition. 【New Pgrade】32 Pack replacement blades are made of polycarbonate material for extra sharpness.Serrated Edges are ideal for thicker grasses that your strings may not be able to handle. 【Easy Installation】The upgraded version of the replacement blade reduces the cumbersome installation process and is easy to install.Trimmer Head fixed dual blades don't worry about getting stuck during installation. 【Efficient Cutting】Use centrifugal force and aerodynamics to reduce resistance and realize rapid cutting. High-quality materials make you safer and has good abrasion resistance,to ensure it can serve you for a long time. 【Package Includes】Polycarbonate replacement blades * 32，Screw * 4 pack，Wrench * 1.If you have any installation or model problems, you can contact us, we will give you a satisfactory answer within 24 hours.