Promaster 400mm F/6.3 Teleconverter Lens Uses T Mount AdapterExcellent condition lens, shows little cosmetic ware or signs of use. Glass has no cracks, scratches or dust. focus and aperture rings function properly. T Mount threads to adapter for camera systems smoothly. Comes with fitted case. Great for telephoto photography capturing distant subjects. ________________________________________________________________ We sell a variety of used antiques. We do our best to accurately describe our items and any flaw