42"Void If Removed" Highly Secure Security Holograms with Usa Flag Under Virtual Magnifier! With Serial Numbers Tamper Evident Circle .79"(20 Mm) 42 CIRCLE,SECURE, SEAL AND PROTECT BOXES, CD, DVD, VHS, ENVELOPES, COMPUTERS 42 Specially designed TAMPER EVIDENT Security Hologram for Documents & Products Can be used on any dry surface as Protective Security Hologram. Pill off Label from the backing, stick on any surface and it is protected. If someone wants to remove hologram label, it is destroyed and can't be reused.