DMcPetra crochet cotton Thread Size 3. These balls of highly mercerized cotton are lustrous nondivisible and made of 100 cotton. Perfect for cross stitching needlepoint and embroidery on a wide variety of fabrics when a rich raised pattern is desired and for the finest of crocheted lace. Size 3. Length 306yd 280m. comes in a variety of colors. Each sold separately. Machine washable dry clean safe ironing safe do not bleach. Dry cleaner safe with P solvents. Imported.