20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Double Convex Biconvex Lens Magnifier Focal Length 40 50 150 200 MM For Glass Lens

Product Features

These K9 optical glass double-convex lenses come in various sizes (20mm-58mm) with different focal lengths (40-200mm), suitable for optical applications.
Made of glass and with an aspheric shape, they provide high-quality optical performance.
Originating from Mainland China, they are reliable and durable for use in optical instruments.
The double-convex structure ensures better light focusing and magnification.
Whether you're a scientist, hobbyist, or professional, these lenses are a great choice for your optical needs.