... defence of keysites. 2.Blade type: BTO-12 ,BTO-18BTO-22 Razor wire 1. galvanized steel 2. stainless steel 3. straight razor ... middle-carbon steel wire, Stainless steel wire.Category: Straight razor wire, Flat-wrap coils razor wire, Fencing type razor wire, Crossed type razor wire, Concertina coils razor ...