Chinese Knotting Cord is a traditional fiber used for fancy knots, kumihimo, and bead stringing. It is a round, braided nylon cord that is manufactured for Tangles ‘n Knots in Taiwan and China. Traditionally labeled: “.04,” “.05,” and “.08,” the actual cord size can run larger than named size. Size .04mm seems to be the most consistent to the label. Size .05mm measures .06-.075mm and .08mm measures .08-1.0mm. If you are looking for a cord to fit a certain diameter opening, we recommend reviewing the size posted in each listing below the name.