77mm Pro Series Snap On Lens Cap For Canon EF 70-200mm f/2.8L IS II USM Lens, Canon EF-S 10-22mm f/3.5-4.5 USM Lens, Canon EF 100-400mm f/4.5-5.6L IS USM Lens, Canon EF 17-40mm f/4L USM Lens, Canon EF 24-105mm f/4L IS USM Autofocus Lens, Canon EF 24-70mm f/4L IS USM Lens, Canon EF-S 17-55mm f/2.8 IS USM Lens, Canon EF 70-200mm f/2.8L USM Lens, Canon EF 24mm f/1.4L II USM Lens, Canon Zoom Wide Angle-Telephoto EF 28-300mm f/3.5-5.6L IS USM Autofocus Lens, Canon EF-S 17-55mm f/2.8 IS USM Lens, Canon EF-S 10-22mm f/3.5-4.5 USM 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 77mm Snap On Lens Cap