Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. They are exceptionally useful for macro photography， enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. They are mounted in between the camera body and lens to create more distance between the lens and film plane.                                    Features            New， never used<br>Adjustable length<br>Color: black<br>                                                                                                Package Includes            1 x Macro Extension Tube Set<br>                                                            Extra Info            Compatibility: All NIKON F， Ai， AF Digital z <br>