Are you looking for professional and practical physical optical convex lens set? Are you in search of sturdy, trustworthy physical optical convex lens set for teaching? , ! Our physical optical convex lens set must meet your needs. Practical and convenient to use. Features - ColorWhite -Material:Glass - Size: 6.00X3.00X1.00cm/2.36X1.18X0.39in - Size: 4.00X3.50X1.00cm/1.57X1.38X0.39in - Size: 6.00X3.00X1.00cm/2.36X1.18X0.39in - Size: 6.00X1.00X0.50cm/2.36X0.39X0.20in - Size: 6.00X1.60X1.00cm/2.36X0.63X0.39in - Size: 6.00X1.30X1.00cm/2.36X0.51X0.39in -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 set is made of glass, providing excellent light transmission, durability, sturdy and useful, safe and excellent, simple to clean. -High precision, lens surfaces with precise processing, ensuring accurate refraction and reflection of light. -Proper size, portable and lightweight, simple to store and carry, suitable for laboratory, school, classroom. Package list: 1 x semicircular optical lens 1 x equilateral triangular optical lens 1 x rectangular optical lens 1 x concave convex lens 1 x cylindrical double convex lens 1 x cylindrical flat convex lens