These are stitch markers for knitting, made with plastic beads and used with knitting 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. Not recommended 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