Round Copper Jewelry Craft Wire, for Beading Jewelry Craft Making, Nickel Free, SilverSize: 0.3mm in diameter(28 Gauge), about 82.02 Feet(25m)/roll.These wires are made of copper. Different sizes can be used in different stringing occasions. 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 artworks. Generally speaking, it is excellent for art projects, jewelry project, craft projects and more.