A: Hi Patricia,
They are approximately 3-3/4 inches from the tip of the needle to the join of the cable. We recommend 9" circulars for knitting socks in the round, 40" circulars for knitting socks using magic loop, or 2x 24" circulars for knitting socks using the 2-needle method.
Answer provided by: Tracy (8/2/2021)