Razor Type: BTO-10, BTO-12, BTO-15, BTO-22, BTO-30, CBT-25, CBT-60, CBT-65. Material of razor blade: hot dipped galvanized, stainless steel 304, 202 Material of wire: electrical wire, hot dipped galvanized wire Diameter of razor barbed wire coil or concertina razor wire coil: 400mm, 450mm, 500mm, 600mm, 1000mm as you required. Weight of razor barbed wire coil or concertina razor wire coil usually is 10kg per.