ORAL CALF FEEDER 2500ML, Oral Calf Feeder – Easy-to-use device for rehydrating scouring calves. Clear collapsible bag, with graduated markings from 500 ml-2,500 ml, has large handle for carrying and hanging. Zippered opening allows for easy filling and cleaning. Features a blue, one piece plastic probe with rounded end designed for ease of introduction into the esophagus, preventing tracheal introduction. Convenient on/off flow clamp included.