These stitch markers are made with round beads and are used for knitting with straight needles. They are convenient for pattern knitting, etc. The second photo shows them on a US size 10.5 (6.6mm) needle. Please use this as a size reference. These are handmade items by an amateur. I do not recommend them for those who are overly concerned about details. *Notes* I have a cat. I pay close attention to odors and hair, but please refrain from purchasing if you are sensitive or have allergies. Stitch markers, knitting markers, knitting, stitch markers