Enhance your physics and science with this comprehensive optical lens set, designed to be easy use, making it a valuable resource for teachers and students alike. It supports interactive learning and helps students develop a deeper understanding of optical principles. Features -Color:Transparent -Material:Acrylic -Size:6.20X3.20X1.20cm/2.44X1.26X0.47in - Multiple optical lens combinations: simple to use, meeting various experimental needs. - Useful: suitable for middle school science experiments, helping students gain a deeper understanding of optical principles - Physical optical convex lens made of acrylic: providing excellent light transmission, durability, sturdy - High precision: lens surfaces with precise processing, ensuring accurate refraction and reflection of light - Proper size: portable and lightweight, simple to use and carry, suitable for laboratory, school, office Package list: 3 x semicircular lens 3 x rectangular lens 3 x concave convex lens 3 x biconcave lens 3 x biconvex lens