razor wire for security BTO-12,BTO-18,BTO-22,BTO-30,BTO-60,CBT-60,CBT-65 ... tape has apparently become the most popular high-class fencing wire for not only military and national security applications, but also ... Number Thickness Wire Dia BarbLength BarbWidth Barbspacing BTO-12 0.5±0.052.5±0.112±115±126±1BTO-18 0.5±0.052.5±0.118±115 ...