Eighteen 440 yd/ 400 m Perfect Spools of brilliant, colorfast Madeira Polyneon embroidery and quilting thread. Its pure polyester fibers are extremely resistant to breakage even at the highest embroidery stitch speeds. One Perfect Spool produces an average of 80,000 stitches or 80 embroidery designs. All spools have double locking end caps and come in a dust-proof plastic container. Thread colors may vary, but are always pulled from Madeira's most popular Polyneon shades.