The crochet hook size and thread size match each other in this way. The diameter of a hook shaft determines the size of the hook and the size of the stitches that are made. It is basically a round shaft pointed on one end with a lateral groove behind it.
Hook size is extremely important to a crochet project determining the gauge of the stitches and the finished size and structure of the item.
So when choosing a crochet hook for your thread you want to choose higher numbers meaning smaller hooks for higher thread sizes which are thinner. In the image below you can see that the first section on the left has crochet hooks with gripping rubber. Standard knitting needle and crochet hook sizes. We will also send you emails about our other blog posts educational content crochet patterns free paid marketing special offers.