... ,4,5,6 or 7wire Annealed Black Twist Wire 1.Material: low carbon steel wire, mild steel wire, Q195 2.Diameter: available from 0.7 ... -3.0mm3.Features: our black wire is suitable tensile strength ... .Usage: mostly used in construction or daily use as binding wire 5.Been exported to: US, Canada, UK, Australia, India, ...