Antibacterial infection protection coating on each stud minimizes site infection which can improve ear tag retention. Also feature patented laser ink technology for improved visibility of management numbers. Provides a permanent laser mark underneath the high contrast durable ink. The laser mark is d to last the life of the animal. Available in sets of 25 in convenient, resealable bags. Also available in your choice of highly visible colors green, orange, white and yellow. Also available by special order in blue, purple and red. 3W x 4H.