Tronixpro 62mm Pro Series Snap On Lens Cap For Sigma 18-200mm f/3.5-6.3 II DC OS HSM 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 62mm Snap On Lens Cap