AMMEES BABIES-Edgit Piecing Crochet Hooks. Learn to crochet on the edge with these quick-n-easy crochet hooks! Crochet hooks have an optimal tip for smooth piecing there is no need to punch holes and they can pierce through two layers of flannel. They work with fingering yarn 7-8sts/inch and #5 and #10 crochet cotton. This package contains two 5 inch tall metal crochet hooks. Made in USA.