Plastic link chain. Each chain link is 6mm (1/4'') in thickness, 21mm (3/4'') wide and 36mm (1-3/8'') long. Sold by the foot. Colors vary. Chain bought will be one length of 1 color, per item. You may request different colors and we will try to fill them. If you do not have a color request, we will ship what is most readily available.