Vet Anesthesia Mask WR-VD030

This is an aesthesia mask only for animal use.The size is different.

The kit of veterinary(animal) anesthesia masks includes:
Animal Type          Size Type
Small mouse          Size 0
Small Feline          Size 1 
Feline                    Size 2
Small canine         Size 3
Medium canine      Size 4
Large canine         Size 5 
Diaphragm diameters:
Animal Type          Size 
Small mouse          int = 2.1cm (0.78") ext = 4.7cm (1.85")
Small Feline           int = 3.2cm (1.26") ext = 5.5cm (2.17")         
Feline                     int = 4cm (1.57") ext = 6.5cm (2.56")
Small canine          int = 3.5cm (1.37") ext = 9.0cm (3.54")
Medium canine      int = 4.2cm (1.65") ext = 11.2cm (4.41")
Large canine          int = 7.3cm (2.87") ext = 13.7cm (5.39")  
Material                  Polycarbonate and silicone rubber