Olympus Dplan 4X microscope objective. The objective has product number of 1-LB522 with a last list price of $183.00 and is intended to be used on the BH2, BHS, BHTU, and Vanox 160mm TL microscopes. The objectives pictured have been tested and found to be optically perfect and cosmetically beautiful. The Dplan 4X has an NA of 0.10, a working distance of 7.03 mm and requires a coverslip thickness of 0.17mm. THE SALE IS FOR ONE EACH OBJECTIVE.  Thank You For Looking!