Sklar Macintosh Laryngoscope Blades are used for direct, rigid laryngoscopy procedures to view vocal cords, remove foreign objects from the throat, biopsy, or tracheal intubation. This product is a size 0 American Style Macintosh blade. In general, Macintosh laryngoscope blades are curved. American Style Macintosh blades are slightly shorter than English Style Macintosh blades, and therefore feature less curvature. This blade is not fiber-optic.