Opteka ET-60 Lens Hood for Canon EF 75-300mm f/4.0-5.6 USM, II, II USM, III USM and Canon EF-S 55-250mm IS Lenses Replacement for Canon ET-60 Lens Hood Compatible with the Canon EF 16-35mm f/2.8L, EF 17-35mm f/2.8L, & EF 17-40mm f/4L Lenses Prevent unwanted stray light from entering the lens Extra protection from accidental impact Designed to match the specific focal length of the lens