18 Pack Line Trimmer Spools Compatible with Black and Decker Trimmers, A6481 A6485 1.65mm Trimmer Spools (12 Line Trimmer Lines, 3 Caps, 3 Springs) Automatic Spool Feed: The Eventronic replacement spool compatible with Black and Decker herbicide is easy to use and automatically feeds the mower by centrifugal force, reducing the hassle of manually arranging replacement spools while working. Abrasion Resistant: Compatible with BLACK+DECKER lawn trimmer. The trimmer line is made of upgraded polyamide nylon with a tensile strength of over 100 pounds, 30% more durable than other brands and lasts longer. Effective Cutting: The Black & Decker is pliable and flexible, allowing the line to stretch and absorb the impact of hard surfaces, and increasing cutting efficiency by 50%, allowing each spool to cut more weeds.