3.5X and 4.5X magnification presented in the flip-up mode is the dentist's popular choice for endodontic procedures. Available with 350, 400, 450 and 500mm working distances. Hogies patented magnetic technology provides for fully integrated and adjustable: Prescription lenses. LED co-axial illumination. Eye protection. Extreme declination angles. All interpupillary distances. Height of presentation of loupes to the eye.