Premium Quality Jeweler's 2-in-1 Eye Loupe 10X 20X - Triplet & Five Elements - Chrome-Plated Brass Professional quality eye loupe for jewelry, diamonds, gems and other fine-detail inspection Compact size - 2" folded - for easy carrying. Weight 3 oz 2 loupes with 10X (18mm) &amp; 20X (12mm) magnification, fold out separately for individual use Heavy-duty brass bodies and frame with mirror chrome finish to last a lifetime 10X has triplet lenses, 20X five elements (lenses) for ultimate clarity without distortion