This is a superior quality, 6-cord mercerized 100% cotton thread on a ball that is excellent for fine crochet, tatting, pulled thread, openwork.
Size 20: 175 yds
Size 30: 208 yds
Size 40: 241 yds
Size 50: 284 yds
Size 60: 317 yds
Size 70: 350 yds
Size 80: 394 yds
Size 100: 470 yds