DMC Pearl Cotton Size 12 in Colour 666 is a highly mercerized, non-divisible cotton thread with a smooth twist and a clean, satiny sheen. Each ball holds 120 m (131 yd) of fine thread that stitches crisp details and even coverage without splitting, making it ideal for precision work. Use it for embroidery, hardanger, blackwork, redwork, smocking, crochet accents, and delicate needlepoint where a neat line matters.