black iron wire (materials for construction) 1.Packing: in coil, by spool, cut into sizes for binding/ ... bundle 2.T/S: 500~980 N black iron ... wire (materials for construction) Diameter: BWG16, 18#, 19#, ... 20#, 22#, are the most popular sizes for saleCoil weight:25kgs,50kgs,100kgs,200kgs in normal ...