Fiber optic inverted (Twist) lens. Approximate measurements are 20. 2mm x 19.1mm x 21.1mm long. These were removed from mx-9644/uv image intensifiers and both sides of the lens are in very good near pristine condition. If there is an issue with your country having intensifier parts imported i have another listing for the same item but categorized differently. These are legal to sell overseas because a fiber optic lens is not ITAR controlled but listing in the night vision category limits sales to USA only. Ships for free.
