Concertina CBT-60 is produced of the central strand of high tensile wire and steel tape punched into a shape with barbs CBT-60. The steel tape is cold crimped tightly to the wire. Razor Tape is manufactured with a galvanized tape (Zinc coating ranging from 50gsm to 275 gsm) and core wire (diameter: 2.5mm) with zinc coating 50 gsm to 275 gsm).