Tronixpro 62mm Pro Series Snap On Lens Cap For Pentax smc Pentax-DA 18-270mm f/3.5-6.3 ED SDM Lens, Pentax SMC DA 18-135mm F/3.5-5.6 ED AL (IF) DC WR 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