From the manufacturer:
Size 10: Lizbeth crochet cotton size 10 is equivalent to a DMC Pearl cotton size 5 and is considered bedspread weight. Excellent for Crochet, Tatting, Knitting, Hand Quilting, Embroidery, Cross-stitch, and Needlepoint projects. Each ball is 25 grams and approx. 122 yards.
Recommended:
Crochet Hook: 6, 7, 8, B-1 (1.6-2.25mm)
Tatting Needle: Size 3-0 or 5-0
Knitting Needle: 0-1 US (2mm-2.25mm)
Size 20: Lizbeth crochet cotton size 20 is equivalent to a DMC Pearl Cotton 8. It is excellent for Crochet, Tatting, Knitting, Needlepoint, Cross-stitch, Embroidery, and Hand Quilting projects. Each ball is 25 grams and approx. 210 yards.
Recommended:
Steel Crochet Hook: 9-10 (1.15mm-1.25mm)
Tatting Needle: Size 5-0 or 7-Fine
Knitting Needle: 0000 (4) (1.25mm)
Size 80: Lizbeth tatting thread size 80 is a wonderful size for small lacy projects. It is excellent for Crochet, Knitting, Tatting, Cross-stitch, Machine and Hand Quilting, Bobbin Lace, and Embroidery. Each ball is 10 grams and approximately 184 yards.
Recommended:
Steel Crochet Hook: US 15 (0.50mm)
Tatting Needle: Size 8-Extra Fine
Knitting Needle: 00000 (4) (1.0mm)