Zoetis Eazi-Breed CIDR 1380 is an intravaginal progesterone release insert designed for cattle. Each device contains 1.38 g Progesterone USP in molded silicone over a flexible nylon spine, with an attached polyester tail for handling. The vaginal insert format offers controlled hormone release for bovine use as directed on the label. Packaged in a convenient 10-device bag, it’s a reliable choice for beef cattle and dairy cow operations seeking quality livestock health products.