General description The 12 Pack Trimmer Line Spool is designed for compatibility with Black and Decker trimmers, specifically models A6481 and A6485. This set includes 12 trimmer lines, 3 covers, and 3 springs, providing everything you need for efficient lawn care. Technical specifications Trimmer line diameter: 1.65 mm Tensile strength: over 100 lbs Durability: 30% more durable than other brands Usage The auto feed spool automatically feeds the trimmer line using centrifugal force, which simplifies the replacement process during operation. The trimmer line is designed to be pliable and flexible, enhancing cutting efficiency by 50% and allowing for better impact absorption when cutting through tough weeds. Other information Package includes: 12 replacement spools, 3 spool caps, 3 springs