material: Metal gutter protector is made of aluminum alloy, which is not rust, strong, corrosion-resistant, wear-resistant, long service life, reusable, material structure is strong enough to withstand all kinds of weather and sunlight, also suitable for In bad weather, so it can be used for a long time. No more clogging: dense aluminum wire can effectively prevent leaves, stones, mud, branches, etc. from clogging the sewers and downspouts, extending the life of the pipes, you don't need to clean the pipes many times, saving time and energy without worrying about dredging the sewers and sewer. EASY INSTALLATION: Simply adjust the diameter of the gutter guard to be slightly smaller than the diameter of the leaf filter down tube, insert and secure it while expanding in the gutter to ensure a snug fit without clogging. ADJUSTABLE: You don't know how big your downspout really is, don't worry, these 3" gutter blade guards can easily bend and adapt to your gutter system, which means a perfect fit and better filtration efficiency, Flexible and fits different downpipe sizes from 2 to 4 inches (rectangular and circular grooves). Widely Used: Protects fallen leaves, roof moss, branches and other dirt animals, as a practical storm drain protector, reusable, usually enough for all your home needs, you can easily ensure your gutter system is in good condition longer