Suggested needles
Circular needles 5 and 6 mm [US 8 and 10] (40 and 80 cm) [16 and 32”].
Double-pointed needles 4 mm [US 6]. If you use the magic loop method, you do not need double-pointed needles.
Gauge
14 sts x approx. 22-23 rows = 10 x 10 cm [4 x 4”] in stockinette stitch 6 mm [US 10].