Material: nylon. Total length: 90 mm Suitable for models: For STIHL grass trimmer PolyCut 2-2, PoluCut 3-2, FSA 45 FSA 57 FSE 52, Replacement Part Number: 40080071000 In order to keep these blades looking their best and working best, be sure to soak them in water before using them. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it