The Nikon S Plan Fluor ELWD 40x/0.60 ∞/0-2 WD 3.6-2.8 OFN22 DIC N1 Objective is a superior-grade microscope objective designed for biological laboratory use. With a magnification of 40x and a dry immersion system, this objective offers high-quality imaging for a range of applications. Made in Japan by Nikon, this objective is a reliable and durable option for researchers and professionals in the field of microscopy.