The optical mirror provides focusing effects, allowing for the observation of fine objects and experimental phenomena. Optical lens with stand is versatile for a wide range of experiments and teaching scenarios. The stand provides stability and convenience in fixing and using the lens. Features -Color:Black -Material:Glass, plastic -Size:21.00X12.00X10.00cm/8.25X4.72X3.93in -The use of plastic and glass ensures that the optical lens with stand is clear and reliable. -This lens is suitable for various optical experiments, teaching purposes, and scientific research. -The optical lens allows for easy usage, can be used in a wide range of experiments and teaching settings. -The stable stand provides convenient positioning and adjustment for the lens. -Can be helpful for students to learn physics experiments and the optical principle. Package list: 1 x optical mirror with stand