1Offers high quality observation without additional chromatic aberration, make image more clear. 2Made of high quality aluminum alloy material, it is durable and can be used for a long time. 3Equipped with a plastic box for easy storage, light weight, small size, easy to carry. 4With a magnification of 5X, the auxiliary objective can effectively enlarge the field of view. 5Perfect microscope accessories, can be widely used in metallurgical microscope. Item Type: Objective Lens Material: Aluminum Alloy Color: As shown in the picture Model: KP-5X Magnification: PL5X Numerical Aperture: 0.12 Working Distance: 26.1mm/1.03in How to Use: Get the product, first look at the lens parameters, install it on the corresponding device, and then perform observation and measurement. 1 x Objective Lens 1 x Installation Diagram