Tinksky 12 Colors 10M 1mm Cotton Cords Strings Ropes for DIY Necklace Bracelet Craft Making (Random Color) Material: durable soft cotton. 12 bundles of the 10M cotton cords in one set will be sold together by random colors. Length of each bundle: about 10 meters.Cord diameter: about 1mm. Simple and practical design, and durable to use. Tightly woven and knotted into DIY bracelet, necklace, string beading, hand sewing, leatherwork, necklace and jewelry making.