The Nikon Plan Fluor 4x/0.13 PhL DL ∞/1.2 WD 16.5 Microscope Objective is a high-quality microscope attachment designed for biological laboratories. Made by Nikon, a reputable brand known for superior optics, this objective lens offers a magnification of 4x with a dry immersion capability. Manufactured in the United States, this microscope objective is perfect for various scientific and medical applications that require precise and detailed observations. Its durable construction and reliable performance make it a valuable asset for professionals in the field of healthcare, lab research, and industrial settings.