The Canon Vivitar MC Tele Converter 2X-4 is a high-quality lens accessory designed for Canon FD mount cameras. Made in Japan, it features a maximum aperture of f/1.4 and a focal length multiplier of 2.0x, effectively doubling the focal length of the attached lens. This teleconverter is part of the MC (multi coated) series, ensuring superior image quality, and comes with its original case and caps for protection when not in use. Designed for manual focus, this Vivitar teleconverter is a valuable addition for photographers looking to extend the reach of their Canon FD lenses. Measurements are approximate. Please see the photos for the condition and size. If you have any questions, please don't hesitate to ask. It comes from a smoke-free home, although we do have 2 canine fur babies. Only the items shown in the images are included; if an accessory or part is not depicted, it will not be included. There is no guarantee that all original accessories or parts will be present. Shipping quote is only for the lower 48 states, outside of that, please contact me for an accurate shipping quote.