Professional WF10x 16mm biological microscope eyepiece. FMC anti-reflection coatings ensures you to have clearer and brighter images. Wide view optical lens provides a wider visual field and helps to ease eye fatigue. The body is made of metallic material with fine workmanship. Lens are corrosion-resistant and have a long serve life. Specification: Material: Metal + Optical Glass Size: 16mm/0.6 inch Package Includes: 1 Piece WF10x 16mm Microscope Eyepiece Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,thank you.