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#, ... , Daily use and using as binding wire for construction,.wire gauge sizeSWG(mm)BWG(mm)metric(mm)84 ...