The Nikon ED50 40X Eyepiece 6951 is a powerful fixed magnification eyepiece designed for Nikon Fieldscopes. Offering a magnification of 40x, this eyepiece delivers exceptional detail and clarity, making it ideal for long-range observation and detailed study of distant subjects. The fully multicoated lenses provide maximum brightness and true color rendition, while the turn-slide rubber eyecup ensures comfortable viewing. Compatible with the Nikon ED50 Fieldscope, the 40X Eyepiece is a valuable addition for enthusiasts seeking high-performance optics.