Specifications: 15m � 450mm razor strip rolls used for a prison. Concertina barbed wire -galvanized wire/stainless wire: CBT-65, BTO-12, BTO-18, BTO-22, Roll with diameter 300 mm/450mm. Concertina barbed tape ( with heavy duty clip 23.5mm lay 19mm wide blades stretch distance) 12.0m coils, coil dia before stretching 600 mm and after stretching 550 mm. Concertina razor coils: BTO-22, 350mm single coil, 500mm cross type, 600mm cross type. Heavy galvanized concertina tape 450 mm coil dia , 10 meter coils. Galvanized razor fencing wire bto22 installed on the top of a rod iron fence. 980mm diameter stainless steel razor coil and flat concertina 900/22. Hot-dipped galvanized single coil razor barbed wire �750mm, wire dia 2.5mm ± 0.10mm / Thk 0.5mm±.05mm.