This M42 Lens to Nikon D90 D80 D3 D700 D5000 Adapter Ring allows you to use your M42 lens on your camera， saving you the expense of a costly and irreversible conversion. To use， simply attach the ring to your lens and then the lens to the camera.                                    Features            New， never used<br>It can focus infinity<br>Material: Aluminium<br>Colour: Silver<br>                                                                                                Package Includes            1 x M42 Lens to Nikon D90 D80 D3 D700 D5000 Adapter Ring<br>                                                            Extra Info            Compatibility: All Nikon DLR / DSLR Mount Camera<br>