? Integrated fiber optic light guide in one piece blade design ? Illuminated by latest Hyper LED handles - brightest natural daylight ? Superfine workmanship, ultimate precision quality blade ? Much easier to clean, store & maintain, fully autoclavable ? Quartz glasl superfine fibers, no black shades on light path ? Sealed stainless steel construction of all Mac & Miller blades ? Super strong, rigid, dependable product quality & performance ? Safe & secure intubation performance ? Full metal spatula, improved landing area ? Natural optimum intense light color of illumination ? Triple sprung ball bearings - secure & firm handle engagement ? LOT number printed blades, correctly labeled & packed in choice of combination set ? Made to ISO 7376:2009 standard, CE marked & fit onto other compatible laryngoscopes