The lower carbon content of our low carbon 12.5 ga Classic Barbed Wire (0.06-0.08% versus 0.28% on our high tensile products) means the wire is more pliable and easier to work with. However, pliability means it can be prone to sagging and elongation, it requires periodic tensioning and maintenance. Our low carbon 12.5 ga Classic Barbed Wire products come with Class 3 and Class 1 coatings.