All Duflex tags are coated with INFECTA+GUARD antiseptic to fight infection! Coating is dry and releases only on application. Studies show infection rates 12 days after tagging may run as high as 80-90% using ordinary identification tags. Duflex tags with antiseptic action cut that rate to 25% or less. The self-piercing tip ensures no disease transfer, and the long shank allows proper blood and air circulation for effective healing and less tag loss. Measures 2 1/4 inches x 2 3/4 inches. Sold in packs of 25.