The TeleTip Fiber Optic Laryngoscope Moveable Blade #4 is a medical instrument used for visualizing the larynx (voice box) during intubation, a procedure for inserting a breathing tube into the airways. This blade #4 (Size 155mm/133mm) is designed with a fiber optic light source that illuminates the larynx and provides a clear view for the healthcare provider. The moveable feature of the blade allows for improved visualization and access to the larynx.