The listing, 2 Afghan Needles Double ended Hooks has ended.
These are 2 different sizes 8 & 10 1/2. Those are the knitting needle sizes. I'm not sure about crochet hook sizes but probably about G & J. I don't have a gauge for hook sizes just for knitting ne4edle diameters. Some people prefer the double hook type. If you don't I will have some single hook ends coming in other auctions. You only need one of these but these two sizes would be good for worsted weight yarn and for the thicker yarns. So you get a choice. They are aluminum and 14" long.