1. beautiful design 2. screw into the lens 3. rubber hood and metal screw 4. black color Lens hoods are primarily designed to prevent ... impact.The Rubber Lens Hood folds down and can remain on the lens permanently because it only lengthens the lens minutely in its collapsed ... filters.Size: 49mm,52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm rubber lens hood 49mm,52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm