Laryngeal Mirror One-piece mirror allows safe, easy cleaning and icing, unlike other mirrors that are constructed with two pieces and can come apart in the mouth if the patient has a bite reflex. Retains cold and accommodates liquid (sour stimuli) for enhancing thermal stimulation. Two sizes: 00 mirror(10 mm) facilitates light touch, 0 mirror (12mm) is appropriate for exams of the oral cavity. Chrome.