Knit gauge (4 in x 4 in): 26 sts x 40 rows on needles US 2.5 (3mm) to 23 sts x 38 rows on US 5 (3.75mm) Crochet gauge (4 in x 4 in): 20 sc x 11 rows on US E-4 (3.5mm to 17 sc x 9 rows on US 7 (4.5mm) Each kit yields a pair of socks!