Fotasy 52mm - 55mm Stepping Up Filter Ring Adapter This 52mm- 55mm 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): 52mm To the side of Filter (Female Thread): 55mm Material: Metal, Color: black Work for 55mm Filters, Lens, Lens hood, Lens cap, etc.