Dmc-Petra Crochet Cotton Thread Size 3. These Balls Of Highly Mercerized Cotton Are Lustrous, Non-Divisible 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.