High quality bayonet mount dedicated replacement lens hood ET-67 made specifically to match the focal length of compatible lenses with black matte inner surface designed to reduce the light's glare -Prevent glare by stopping light from coming into the lens at side angles -Improves contrast and image quality -Protects lens from scratches and impacts -You can use lens cap and filter with the hood on a lens -Can be installed in reverse position to save space when not needed -Compatible lenses: Canon EF 100mm f/2.8 Macro Canon EF 100mm f/2.8 Macro USM