Product details:

For RF 70-200mm f/2.8L IS USM Lens, Blocks Stray Light from Entering Lens, Protects Lens from Impact. Dedicated to the Canon RF 70-200mm f/2.8L IS USM lens the ET-83FW III Lens Hood helps to minimize flare by deflecting stray light from entering the lens. The hood also provides additional protection to the lens from accidental impacts bumps or scratching.