Fotodiox 58mm Filter Thread Macro Reverse Mount Adapter Ring for OM 4/3 Camera, Fits Olympus E-3, E-5, E30, E-620, E-600, E-520, E-510, E-450, E-420, E-410,E-400,E-300, Panasonic Lumix DMC-L10, L1

All Metal DesignPrecise Thread and Camera MountExtream Macro PhotographyAnodized Black Finishing24 Month Manufacture Warrenty
Product DescriptionBy mounting the lens backward on a camera body, you can create amazing macro images. It is extremely fun to turn you lens into a macro lens. You can mount lenses with 52mm filter thread size of any brand. It will be more fun to use on lenses with aperture dial to adjust aperture.

Source: Digital Camera and Video Store...