Our optical lens is an essential addition to any middle school science . Featuring different shapes lenses, it allows students to conduct various experiments and observe light behavior . Easy to use, making it suitable for both teaching and self-study. Features -Color:Assorted Color -Material:Acrylic -Size:6.00X3.00X1.00cm/2.36X1.18X0.39in - Multiple optical lens combinations, simple to use, meeting various experimental needs. - Useful physics optics equipment, 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 and useful. - 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: 1 x semicircular lens 1 x equilateral triangular lens 1 x biconcave lens 1 x biconvex lens 1 x convexo-plane lens 1 x planoconcave lens