Lizbeth Crochet Cotton size 40 is equivalent to a DMC Pearl Cotton 12. Excellent for crochet, tatting, knitting, machine and hand quilting, bobbin lace, cross-stitch and embroidery projects. Each ball is 25 grams and approximately 300 yards. Steel crochet hook size US12-14 (.9mm) recommended. Tatting needle size 7-Fine recommended. Knitting needle 0000 (1.25mm) recommended. Lizbeth is premium crochet cotton thread, great for all needle art projects. This crochet cotton is made of 100% Egyptian cotton and is a 6-cord cordonnet cotton available in a large assortment of solid and multi colors. It is a high-quality thread that is shiny with a rich and vibrant color. It is super combed and gas-singed for outstanding body, mercerized and colorfast.