... 65mm 4.BTO-10,12,22,30,CBT-65. razor barbed wire,concertina razor barbed wire1.material:high quality low carbon steel wire2.surface ... treatment:galvanized,PVC coated3.Razor Blade specification Razor Blade SpecificationReference NumberBlade ... 5 CLIPS)BTO-10.12.18.22.28.30Cross type professional manufactory razor barbed wire