Feature: Industrial Microscope Camera C-MOUNT Lens 1-3/4 inch (42mm) Mounting Thread. Doubles total magnification power of your microscope and reduces focus length. These are additional accessories that increase the working distance of the microscope or enhance magnification. Provides clear images. Suitable for optical monocular lenses with 42mm threaded interfaces. Compatible with video microscopy. 0.3X reduction objective lens increases working distance. Auxiliary large objective lenses such as 0.3X are suitable for 10A monocular video microscopes. Magnification Power: 0.3X Objective Magnification results in 0.7X - 4.5X effective magnification (approximately 10X - 180X on display; using 0.3X Barlow Lens, approximately 2.45X - 360X on display). Tips: Product may be updated periodically. Actual product may have slight differences in color or appearance. Changes in color and design may occur without notice. Please consider this before placing an order if specific appearance or color is required. Material: Metal Color: Black Package Contents: 1 x Monocular Lens Note: Other products are not included. Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.