Fotodiox Dedicated Lens Hood, for Canon EF 85mm f/1.8 USM, 100mm f/2.0 USM, 135mm f/2.8 SF,100-300mm f/4.5-5.6 USM, EF 70-210mm f/3.5-4.5 USM, EF 75-300mm f/4.5-5.6 Lenses as Canon ET-65III ET-65 III

Made of Premium Grade High Impact PlasticDedicated Bayonet Mount Lens Hood24 Month Manufacture Warranty
Product DescriptionLens hoods are 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. Dedicated lens hoods are designed to match the specific focal length of the lens it was designed for.

Source: Digital Camera and Video Store...