This is for a Nikon 50mm F/2 AI lens with front lens cap only. This lens has a metal mount and is very sturdy. The lens is in GREAT fully functioning condition. The focus wheel works smoothly, and the aperture is clean. The glass is great, no fungus, no haze, no scratches. Some dust on the body of the lens. I offer a 30 day no questions asked return policy. Your lens will be carefully packaged and brought to the post office IMMEDIATELY with ZERO day handling time. Your lens will arrive in 2-3 days via USPS mail.