Package Contents: 4-pack of spools and trimmer line compatible with First4spares Flymo. Round cutting line: Each circular cutting line, line diameter: 1.5 mm, length: 10 meters. Material: High-quality, durable nylon. The increased cost of materials makes the product more wear-resistant. Easy to use: The cutting line is wound on the spool, convenient to use and store. Alternative to part number – Fly021. Compatible with the following models: See description for a complete compatibility list. Made with high-quality materials to guarantee a high-performance product. Compatible with the following models: Contour, Contour XT, Contour 500, Contour 500 Power Plus, Contour 500XT, Contour 700, Contour 700 Power Plus, CTXT25, EIT23, EIT250, EIT300, ET23, ET23DX, ET23+DX, ET25+DX, MET230 Twin, Minitrim Auto 2003, Mini Trim Auto ST, Mini Trim Auto XT, Mini Trim Auto Plus XT, Minitrim Auto Plus, Mini Trim Contour XT, Multi Trim 250D, Multi Trim 250DX, Multi Trim 300D, Multi Trim 300DX, Multi Trim