These stitch markers are made with retro-cute plastic beads and are used for knitting with a knitting needle. They are convenient for pattern knitting, etc. The second photo shows them on a US size 10.5 (6.6mm) knitting needle. Please use it as a reference for the size. These are handmade items by an amateur. Not recommended for those who are sensitive to such things. *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