| Brand | Unbranded |
| Origin | Mainland China |
| Material | copper |
| High-concerned Chemical | None |
4X 10X 20X 40X 60X 100X Biological Microscope Achromatic Infinity Objective Lens RMS Thread for Olympus Microscope. Can be used with FN 22 mm, 20mm, 18mm eyepiece. Magnification: 4X, 10X, 20X, 40X, 60X, 100X.