Drench Gun, 250ml/400ml, Unbreakable Plastic (2 Sizes/price to Choose From) Large capacity drencher allows for administration of large doses to treat adult cattle. 250ml/400ml Manufactured with an almost unbreakable plastic barrel. Comes with an oral cannula. Excelent for use to rinse the mouth before a dental procedure. Used to rinse the horse's mouth. For Equine Dentistry Use.