These masks provide a convenient way of artificial ventilation or administration of anesthetic gases to Feline or Canine patients and feature a high-quality plastic cone for full visualization and a highly flexible, replaceable rubber diaphragm for a leak-free fit. One end with a standard 15mm (3/5 in) connector fits all breathing circuits, while the other end has a soft flexible rubber diaphragm that molds itself to the contours of the patient’s snout. Two sizes are available.