These are the only clip-ons that provide eight diopters of magnification. Ideal for examining the finer details of stamps and coins, tying flies, or simply threading a needle, they are completely hands-free, magnifying objects up to 2X from a range of 6-26" away (depending upon the level of correction of eyeglasses worn) for resolution of minute details. They adjust to five vertical positions for optimal alignment with most pairs of corrective eyewear and they flip up just like clip-on sunglasses. Made by Eschenbach, renowned purveyors of precision eyewear in Germany since 1913, the clip-ons' durable, scratch-resistent PXM plastic lenses are lightweight enough (less than one ounce) for comfortable extended use. Includes protective zippered case. Not available for shipment in New York. 2" H x 3 1/2" W x 2" D. (3/4 oz.)