OA40A Oropharyngeal Guedel Airways Pink Size 000, 40mm OA50A Oropharyngeal Guedel Airways Blue Size 00, 50mm OA60A Oropharyngeal Guedel Airways Black Size 0, 60mm OA70A Oropharyngeal Guedel Airways White Size 1, 70mm OA80A Oropharyngeal Guedel Airways Green Size 2, 80mm OA90A Oropharyngeal Guedel Airways Yellow Size 3, 90mm OA100A Oropharyngeal Guedel Airways Red Size 4, 100mm OA110A Oropharyngeal Guedel Airways Light Blue Size 5, 110mm OA120A Oropharyngeal Guedel Airways Orange Size 6, 120mm