These exciting new multicolor Sulky threads are a masterful blend of different colours within the same range of tone and intensity, with random, subtle colour changes every 6.4cm - 13cm ! No thread has ever done that before. They will add excitement to your quilting and everything else you do. They're made of the highest quality, long-staple, 100% Egyptian Cotton. Not only are they ideal for quilting, but also for thread lace, bobbin work, thread painting, red work and decorative embroidery. You'll wonder how you ever got along without them. The 12 weight spools are a heavier thread and contain 330 yards per spool.