Approximately 3cm Please choose from pony hook, hair tie, or magnet. These are resin handmade items, so there may be some distortion, small dust particles, or air bubbles. The color and texture of the actual product may appear slightly different from the photos depending on the lighting. As these are handmade, they are not as strong or perfectly made as mass-produced items, but each one is carefully created. Please understand and consider before purchasing. * There may be scratches on the metal fittings and beads from the time of their arrival or scratches made during the creation process. Please understand.