Fotasy ET-87 Lens Hood for Canon 70-200mm F/2.8L IS II USM Telephoto Zoom Lens/Replaces ET-87, Black Replacement for Canon ET-87 Lens Hood for Canon 70-200mm f2.8L IS USM II lens Designed to prevent unwanted stray light from entering the lens. Ensures no problems with vignetting or motor functions. Added benefit of extra protection from accidental impact.