... 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 400-800kgs ... anticorrosive oil. Hard to rust. Mainly used for binding materials, Daily use and using as binding wire ...