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 spool 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 Auto Feed Spool: Automatically feeds the trimmer using centrifugal force, minimizing manual adjustments. Efficient Cutting: The line is pliable and flexible, enhancing impact absorption and increasing cutting efficiency by 50%. Other information Package includes: 12 replacement spools, 3 spool caps, 3 springs.