RainbowImaging M42 Lens to Nikon CameraAdapter with Infinity Focus, for Nikon D3x, D3, D3h, D700, D300s, D300, D200, D7000, D90, D80, D5000, D3100, D3000, D70s, D70, D60, D50. It allows M42 Screw mount lens to be used on Nikon Camera body with infinity focus It is with glass element. The glass element can be removed for Macro Photography. Made of metal With a free Nikon lens rear cap