1co mm odity: annealed wire, balck annealed wire, soft annealed wire2assortment: black cut wire, black iron wire, oxygen free annealed iron wire, bright wire, coil wire 3 construction for biding, making handcraft4packing: coil wire, spool wire, cut wire, tie wire indifferent weight. We produce good quality black iron wire, also called black wire, comes in the form of coil wire or cut wire. Mostly used in construction or daily used as binding material5Wire Gauge SWG ( mm ) BWG in mm mm