A sturdy 6-ply thread, Dazzle? by Wonderfil is comparable in weight to a #8 perle cotton. This 100% rayon and metallic mix carries a naturally bright lustre with a silky finish, making it an excellent choice for crafts, crochet, knitting, and highlighting the details on dimensional stitches. Can be used for couching, serging and bobbin work, but not recommended for machine sewing. DZ9000