We can provide two kinds of barbed wire: one is with 2 strands, 4 points. Barbs' distance 3-6 inches (Tolerance +- 1/2?. The other is razor barbed wire.Materials: galvanized iron wire,PVC coated iron wire in blue, green, black and other colors.Core of PVC Coated Barbed Iron Wire can be galvanized iron wire or black iron wire.Tensile strength : Barbed Iron Wire is 30-55 kg./mm.2General Use: Barbed wire mainly serves in protecting of grass boundary, railway, highway, etc.