1PC K9 Optical Glass Double Convex Biconvex Lens - 20mm- 58mm - Focal Lengths 40mm, 50mm, 150mm, 200mm Magnifier(D26.9 F50 C5.4 E2)

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K9 optical glass construction ensures superior clarity and durability for all your magnifying needs. Available in multiple diameters (20mm to 58mm) and focal lengths (40mm to 200mm) to suit various applications. Perfect for scientific experiments, educational purposes, and hobbyist projects requiring precise magnification. Each lens features double convex devise, providing excellent light transmission and minimal distortion. Package includes 1PC lens; manual size measurement with an error value within 0.3mm for accurate specifications.