Check the listing for details. Coupling Ring Male-Male Thread 77mm 77-77 Double Lens Reverse Adapter Macro. Condition: New, Made in China. Listed at 29.59 USD. Designed to allow the photographer to face two lenses together, via male-to-male couplers, enabling high quality macro images. It will work by reversing a standard lens to the front of a telephoto lens. This Ring allows 2 x 49mm lenses to be joined together Our default method of sending mail to all areas of the UK is by Royal Mail 48 service. We also offer Royal Mail 24, Special delivery & tracked services. Bulkier Items are usually sent by courier Our default method of sending International Mail. Is by International Standard Airmail, using the Royal Mail. This is NOT tracked. Please be aware eBay?s delivery estimates are only estimates it can take longer. For a faster service please consider our tracked service We do offer a tracked service through the Royal Mail, which is a little more.