<ul><li>Allows you to attach the EM-140 DG Ringlight Flash to be mounted on any lens with 52-millimeter filter threads</li><li>This Adapter ring make it possible to attach the EM-140 DG Macro Flash to a variety of lenses</li><li>fully compatible with Sigma EM-140 DG Electronic Flash Macro.</li><li>allow the EM-140 DG Electronic Flash Macro ringlight to be mounted on a lens withfilter threads the same size as the adaptor.</li><li>Made in Japan</li></ul><br><br>This Sigma 52mm adapter ring allows the EM-140 DG Ringlight Flash to be mounted on a lens with 52mm filter threads.

Sigma 52mm Macro Flash Adapter