This is a brand new 100X (spring, oil) Plan Achromatic microscope objective lens with high quality. It is an International DIN/JIS lens. It fits common size (DIN/JIS standard) compound / biological microscopes. We also have Plan 4X, 10X and 40X objective lenses available. Give your microscope a boost with greater power & clarity at a fraction of cost. Your satisfaction is guaranteed or your money back. Features & Specifications: Plan Achromatic Objective 100X Magnification Power 100/1.25 Spring, Oil 160/0.17