Black & Decker AF-100-3ZP 30-Feet 0.065-Inch Line String Trimmer Replacement Spool, 3-Pack Black & Decker (96) Buy new: $27.05 $14.93 12 used & new from $10.95 (Ranking is updated hourly. Visit the Bestsellers in Power & Hand Tools list for authoritative information on this product’s current rank.)

Here is the original: 
#10: Black & Decker AF-100-3ZP 30-Feet 0.065-Inch Line String Trimmer Replacement Spool, 3-Pack