Snap Spool. 12 weight. These exciting new multicolor threads are a masterful blend of different colors within the same range of tone and intensity, with random, subtle color changes every 2-1/2 to 5 inches! 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. One strand of 12wt cotton petites equals two strands of the typical embroidery floss.Machine or Hand WorkAppliqueHand SashikoCounted Cross StitchAll Purpose SewingHeirloom SewingAnd much moreRecommended needle size: 100/16 denim or topstitch