EzFoto 72mm-77mm Stepping Up Filter Ring Adapter This 72mm- 77mm step up adapter ring allows a filter attachment with larger thread size (55mm) to be used with a lens with smaller thread size (52mm). To the side of Lens (Male Thread): 72mm To the side of Filter (Female Thread): 77mm Material: Metal, Color: black Work for 77mm Filters, Lens, Lens hood, Lens cap, etc.