Metal Max™ 90 Conventional Laryngoscope Blade - MAC 1, Disposable (Pack of 10)Laser welded Stainless Steel runs through the hook on section of the plastic block to provide structural strength Compatible with all ISO 7376: 2020 Compliant Conventional System Handles Excellent light output with no heat output from the meLED Made from Surgical Stainless Steel AISI Type 304 Correctly formed blade shape and atraumatic tip where appropriate, no sharp edges Full length spatula like a quality reusable blade many competitor disposable