Pre-Wound: The spool line is 13.2 ft in length and 0.063 inch in diameter, factory wound for maximum reliability and consistent performance. Compatible with EasyGrassCut 23, 26, 18, 18-230, 18-260, 18-26. Premium Quality: Our spool replacement is made of durable ABS material and polyamide nylon thread. Pliable, flexible, and long-lasting. Easy to Use: Snap-in installation allows for quick and easy replacement without tools. Precision CNC machine cutting and automatic bobbin winding ensure consistent performance, reducing time compared to manual winding, minimizing trimmer wear, and preventing line snags during use. Safety Tip: Due to high centrifugal force and fast cutting speed during operation, it is recommended to wear eye protection and long pants to help prevent injury. Material: ABS, nylon. Color: Black. Package Contents: 6 x Spool & Line. Note: Colors may vary slightly due to lighting and monitor display differences. Measurement tolerance: +/- 1-3 cm.