First Defense Tri Shield Syringe : 12ct Product Type_Feeders & Waterers Esophageal probe administers fluids and Esophageal probe administers fluids and nutrients directly into the rumen Can administer quart quantities of fluids to a calf in less than one minute Probe is hardened which prevents burrs that can cut the throat and cause infection Roll tube can be reused many times – heavy duty material resists punctures and tears Check valve allows liquid to leave the bottle and keeps air out Bottle design collapses as the liquid leaves without venting Economical and Flexible safe any time of the year coli and coronavirus antibodies contained in First coli and coronavirus antibodies contained in First Defense®