Razor wire etched onto 0.005" (0.127mm) brass.
This product includes more than 18.3 feet (5.58 meters) of short tine razor wire and is provided in a continuous loop to allow you to set the scale length of your choice. That's 18.3 actual feet, not scale feet, of realistic concertina wire.
CAUTION: This product is SHARP and should be handled with care.