Guedel airways Made from semirigid non-toxic polyethylene. Color-coded bide back Guedel style enclosed center channel Packed in individual PE Bag Size available: 000#, 40mm, pink 00#, 50mm, blue 0#, 60mm, black 1#, 70mm, white 2#, 80mm, green 3#, 90mm, yellow 4#, 100mm, red 6#, 120mm, orange
