1x Copper Metal Jewellery Making Wire 0.8mm or 20 gauge x 6 metres. Half hard wire type in pure copper. 0.8mm diameter is equivalent to american 20 gauge wires. Good for making jewellery, beading, clasps, findings, wire wrapping (beads and stones), ear wires and jump rings. Will fit through most crystals 4mm and larger, larger seed beads (size 8 plus), larger semi-precious (you may need to use a reamer), and glass beads (including Czech glass).