Fiberoptic light transmission provides cool obstruction free viewing. 2.5V halogen illumination for true tissue color and consistent long lasting lamp performance. Stainless steel. Satin, non-glare finish. Lightweight design. Fully compatible with all fiberoptic hook on handles that conform to ASTM (F965) and ISO (7376-1). Color coded green to signify compatibility and differentiate from standard hook on models.