This round string is about 1mm wide and can be used for decoration purposes, it is also known as gimp.
Gimp is a narrow ornamental trim used in sewing or embroidery.
Gimp is a round ornamental thread/trim that cannot be flattened even by the greatest effort. So it is ideal for wrapping of tassel heads, as a decorative thread for the edge of bobbin laces, for the couching foot of the sewing machine-and for hand embroidery. Gimp is used as trimming for dresses, curtains, furniture, etc.
+- 25m on each roll.