... good security function Type: BTO-12,BTO-22,BTO-30,CBT-65 cross type concertina razor wire is to be set ... walls.Type: BTO-12,BTO-18,BTO-22,BTO-30,CBT-60,CBT-65Material: galvanized or stainless steel Packing: packed in waterproof ... 2.5±0.1 22±1 15±1 34±1 CBT-65 0.6±0.05 2.5±0.1 65 ... Notes 450mm 33 8M CBT-65 Single coil 500mm 41 10M CBT-65 Single coil 700mm 41 10M CBT-65 Single coil 960mm ...