This innovative Magrath Fluidfeeder features reinforcement at the bottle cap which permits one-handed administration of colostrum and life-saving fluids to newborn calves. The stainless steel probe crimps at the neck to stop the flow while the user inserts the esophageal tube a feature designed to help prevent accidental insertion into the trachea. The semi-flexible bottle is then turned upright and fluids flow into the calf. 2 quart bottle.