A unique metallic thread for all needle arts! A strong, smooth, kink-resistant metallic, it is comparable to a crochet cotton size 20. Each ball is 25 grams and approximately 25 yards. Steel crochet hooks size 9-10 (1.15-1.25mm) recommended. Tatting needle size 5-0 or 7-Fine recommended. Knitting needle 0000 (1.25mm) recommended. Because it is not made of a natural fiber like cotton, there can be a small variance in size from color to color. Details: Available in multiple colors 25 yd.Size 20 Metallic thread