DuFlex ear tags are molded from a patented flexible polyurethane for rugged, lightweight tags in bright, fade-resistant colors. DuFlex self-piercing studs are specifically angled to create clean, small incisions. Studs are treated with patented Infecta-Guard, to reduce the risk of infection and disease transfer, and to facilitate proper healing. DuFlex ear tags are designed for easy application, superior retention and reliable performance in harsh weather conditions. 1 7/8 inch high x 1 7/8 inch wide. Sold in packs of 25.