Nikon LC-55A 55mm Snap-On Lens Cap Go to amazon.com Related posts Expert choice for nikon 55mm lens cap FeatureNikon LC-55A 55mm Snap-On Lens Cap DescriptionThe Nikon LC-55A Snap-on Front Lens Cap snaps onto lenses with a 55mm filter diameter, protecting the front element from dust, smudges and scratches when not in use.