Well-constructed: Made of high-quality zinc alloy and optical glass, efficient and durable. Portable and convenient: The foldable, stand-up design makes it easy to carry, and you can use it anywhere, anytime. Wide application: It can provide a fixed focus and can be used for counting threads, stitches, or measuring small parts; excellent for the watchmaking, jewelry, and woven fabric industries. Pouch: It comes with a pouch to protect your magnifier. Package contents: 3 magnifiers and 3 pouches.