Size: about 0.4mm thick, about 15m/roll.
These wires are made of copper. Different sizes can be used in different stringing occassions. Larger wires can be used to string beads which are bigger and heavier, and smaller wires are the opposite. You can string some jewelry beads on it to be bracelets, necklaces and so on. And it also can be used to make some artwares. Generally speaking, it is excellent for art projects, jewelry project, craft projects and more.