ZEISS Epiplan-Neofluar Objective Lens 5x/0.15 Infinity focus, cover glass not required Working Distance: M27 x 0.75 Mounting Threads Field Number: 25mm HD / BD - Brightfield / Darkfield Parfocal distance: 45 mm. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Objectives". The seller is "med2lab" and is located in this country: US. This item can be shipped to United States.