These acrylic lenses are nice for science teachers and students in a laboratory setting. With exceptional optical performance and durability, they are designed to withstand frequent use. The lenses in various shapes such as triangular, semi-circular, and rectangular, allowing for a wide range of physics demonstrations. Features -Color:Transparent -Material:Acrylic -Size:5.00X5.00X0.90cm/1.97X1.97X0.35in -Size:5.20X2.60X0.90cm/2.04X1.02X0.35in -Size:6.20X3.20X0.90cm/2.44X1.26X0.35in -Size:6.10X2.30X0.90cm/2.40X0.90X0.35in -Size:6.20X2.20X0.90cm/2.44X0.86X0.35in -Size:6.20X2.10X0.90cm/2.44X0.83X0.35in -Versatile range of shapes: This optical lenses set includes lenses in various shapes, such as triangles, semicircles, and rectangles, etc -Reliable and versatile lenses: Optical lenses are an ideal tool for use in classrooms or laboratories, especially for physics education -Upgrade your lab: These lenses can be used to teach a wide range of topics, making them a versatile addition to science -Ideal for teaching concepts: By using these lenses, students can gain a deeper understanding of scientific principles, such as reflection and refraction -Essential tools for physics education: These lenses are essential for any physics education, fit for students to explore and experiment with scientific concepts Package list: x Optical Lens