The Canon ET-60 Lens Hood is primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. Features: ◦Prevent glare and lens flare caused by unwanted light ◦Jazz up your photos with richer colors and deeper saturation ◦Looks like Flower design reduces vignetting effect ◦Protect your lens from minor impact ◦Twist-lock mounting for extra security ◦Can be attached in the opposite direction for storage Comparible With: ◦EF 75-300mm f/4-5.6 III ◦EF 75-300mm f/4-5.6 III USM ◦EF-S 55-250mm f/4-5.6 IS ◦EF-S 55-250mm f/4-5.6 IS II Package Included: ◦1 x Lens Hood for Canon ET-60Unbranded/Generic