Do you need a different front-end thread? These rings provide a female thread adapts your accessory， and a male thread which screws into your lens. Allows you to mix filters and other accessories on various lenses which may have different size accessory threaded sizes. This is a brand new 58mm-49mm Camera Step Down Lens Filter Adapter Ring. This step down adapter ring allows you to use smaller size filters on lenses with a larger diameter thread. It is a great way to enhance your photographic experience!                                    Features            The ring is made with high quality material<br>Ring adapter is a very popular method in macro photography<br>With this adapter ring， you can experiment by taking close pictures of various small items such as stamps， coins and insects ect<br>Reference number of the camera data to optimize the plant design drawings to achieve high precision machines to better protect your camera<br>The adapter step down ring has impact resistance<br>This is an original product<br>Male Thread: 58mm<br>Female Thread: 49mm<br>Color: Black<br>                                                                                                Package Includes            1 x 58-49mm Step Down Filter Ring Adapter<br>                                                            Extra Info            Compatibility: Filters， adapters， lens， lens hood， lens cap， and more...<br>