Optical 3D Lens for Magnifier - 20 Pcs 42mm Diameter Double Convex Lenses 68mm Focal Lengths Biconvex Lens Magnifying Glass Lens Optical Plastic Lens

OPTICAL LENSES: Glass magnifying lens has a large viewing angle, which is suitable for reading newspapers, books, magazines, maps, science, jewelry, inspection, rocks, handicrafts and so on MAGNIFIER LENS: Double convex lens can help you read grocery store labels, restaurant menus, formula bottles, and other things printed with fonts that are too small to read MAGNIFYING LENS ROUND: Bi convex lens is easy to store and can be put in a desk or purse. Please note that the two sides of this convex lenses protrude to different degrees, with one side protruding a little more and the other side protruding a little less MATERIAL: Made of enhanced quality optical grade acrylic material, with high transparency and durability DOUBLE CONVEX LENSES: This small magnifying lens can be a nice for your grandparents who are presbyopic or have failing vision