MULTIPURPOSE - This double concave lens is great for scientific research laboratories, offices and daily use, suitable for scientific researchers, office staffs, families, etc.

WHAT YOU GET - The package comes with 1pcs concave lens that is 30 x 4mm / 1.18 x 0.16 inch(OD*H), 75mm Focal Length.

RELIABLE MATERIAL - This double concave lens is made of glass, which is safe, scratch-resistant, reusable and provides excellent optical performance.

SPECIAL DESIGNED - This double concave lens is accurately measured and well polished, and can be used to manufacture telescopes for different circumstances, helping people better focus light to see the image of objects clearly.

KINDLY NOTE - Please read the dimensions clearly before ordering, and please handle the lens carefully after receiving the product.