1000 yard/ 1000 m Crochet Thread weight: 10 Fiber content: 100% mercerized cotton, 3-ply Bedspread Weight Knitting Gauge: 4 #34; x 4 #34; (10 cm x 10 cm) 33-40 S with a 2-2.25 mm (U.S. 0-1) knitting needle Crochet Gauge: 4 #34; x 4 #34; (10 cm x 10 cm) 32-42 dc with a 1.6 mm-2.25 mm (U.S. 6, 7, 8, B-1) crochet hook