Feature 1Infinite Lens: The infinite objective is a parallel optical way without included angle, and can correct for spherical and sunken errors. The resulting image is clearer and sharper, with a wider field of view than ordinary achromatic lenses. 2RMS Interface: Comes with standard 20.2mm RMS interface, the objective lens is highly compatible with most professional biological microscopes. 3Exquisite Crafting: The entire set is designed with exquisite craftsmanship. This objective lens has been coated and has a high transmittance and refractive index, making the image brighter and clearer than other objectives. 4Wide Field of View: More comfortable to watch, the lenses will not be injured or bloom, and the service life is long. 5Good Material: Adopting premium brass and stainless steel materials, the infinite objective lens is very durable with corrosion and falling.Item Type: InfiniteObjectiveLensMaterial: Brass, stainless steelUse: Widelyused, the threaded interface size is standard RMS size, and can beusedon most professional biological microscopes.Specification: 100X .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x InfiniteObjectiveLens1 x Storage Tube