Most of them have glitter or rainbow mizuhiki to add a touch of glamour. The three-strand ones are about 2cm in size, but there may be slight variations depending on the thickness of the mizuhiki and the way it's woven. The back is secured with white glue. These are blue-toned and there are 10 sets of 2. They can be used for various purposes such as wrapping, keychains, mask charms, small envelopes, small gifts, earrings, etc. Please see my profile.