US 10.5 (6.5mm) 24" or longer circulars and DPNs.
At the end of Provisional Cast On (Crochet Chain method) section:
To unravel (when sts need to be picked up), pull chain end out, and the chain should unravel, leaving live sts. Attach first color of Simply Cotton and purl one row.
US size 9 (5.5mm) straights and/or circular