The Handheld Convex and Concave Lens set is made using plastic,metal and glass materials, specifically chosen for their optical properties. The convex and concave lenses ensure accurate and reliable experimental results. Its compact and lightweight design makes it easy to carry and use, making it suitable for both students and professionals. With its wide range of applications, it can be used in physics optical experiments, teaching demonstrations, scientific research, and more. It serves as an essential tool for enhancing students' understanding of optical principles and improving their learning outcomes. Features -Color:Silver -Material:Glass,Plastic,Metal -Size:11.80X3.00X2.00cm/4.64X1.18X0.79in -Optimal materials ensure precise and dependable outcomes: the use of safe materials accurate and reliable results. -Fixed focal length caters to diverse experimental needs: accommodates various requirements in experiments. -Portable and lightweight design facilitates effortless usage: the compact and lightweight design makes it easy to use and carry around. -Versatile applications in physics, education, and scientific exploration: this product can be used in a wide range of fields such as physics, education, and scientific research. -Enhances students' grasp of optical principles and boosts learning efficacy: it helps students better understand optical principles and improves the effectiveness of their learning. Package list: 1 x Concave Lens 1 x Convex Lens