This ES-62 Lens Hood is designed for special lens, it can block stray light by extending and shading the end of the Canon 450D EF50mm f/1.8 II Nikon 50mm f/1.8D Lens and prevent the lens from scratch. Also the bayonet mount design makes it firmly on your lens. Give you better photographic experiences. Suitable forCanon EF50mm f/1.8 IINikon 50mm f/1.8D Specification:Color: blackBayonet mount lens hoodSize: 40 (H) x 88 (Dia) mmWeight: 20g Package Contents:1 x Lens Hood for Canon ES-62