Magnifying glass lens--made of sturdy material, it has excellent optical performance and durability,lens for magnifier
Optical lens for equipment--allows you to adjust the focus and in or out to meet your specific lighting needs,physics optical lens
Magnifying lens--this equipment lens is crafted with sturdy for great optical performance and long-lasting durability,science teaching tools
Easy to use: easy to install and operate, suitable for both personal and professional use,convex lens,convex lens for equipment
Beam concentration: the optical lens can concentrate the light in a small area, providing a stronger illumination effect,equipment lens,magnifying tool