(Allflex) Allflex Tamperproof cattle ear tags offer advanced security for your livestock identification and management program. When Allflex Tamperproof tags are applied, the self-piercing tip of male button is locked tightly into the panel tag. Tags swivel to prevent snagging, but can not be removed without being destroyed. Ideal for official certification or registration programs, or to provide added security. Allflex Tamperproof tags are made from polyurethane, making them completely waterproof, tough, durable and snag proof. Use Allflex Universal Tagger or Retract-O-Matic to apply tags. 4" high x 3" wide.