Tronixpro 55mm Pro Series Snap On Lens Cap For Sony 55-200mm f/4.0-5.6 DT Alpha A-Mount Telephoto Zoom Lens, Sony 50mm f/1.4 Alpha A-Mount Standard Prime Lens, Sony DT 18-55mm f/3.5-5.6 SAM II Lens This lens cap protects lens surface from dust & shock during storage. Unique snap on design allows easy installation onto the lens & one-step removal from the lens. It fits directly onto the lens with a double-action spring design. Microfiber Cloth 55mm Snap On Lens Cap