Eazi-Breed CIDR 330 from Zoetis is an intravaginal progesterone release insert for sheep (ewes), designed for veterinarian-directed hormone protocols. Each device contains 0.35 g Progesterone USP in molded silicone over a flexible nylon spine with an attached nylon tail. This livestock health product supports precise, controlled hormone delivery via the vaginal route. Convenient 20-insert bag format suits flock management needs on commercial farms and small holdings alike.