Guedel Airway (Oral)
Size: 000#-40mm (pink), 00#-50mm (blue),
        0#-60mm (black), 1#-70mm (white),
        2#-80mm (green), 3#-90mm (yellow),  
        4#-100mm(red), 5#-110mm(light blue),
        6#  -120mm (orange)