Weatherproof Aluminum: Resistant To Rust And Corrosion, Providing Long-Term Durability In Any Climate. Easy To Install: No Special Tools Needed, Simply Roll Up The Guards Before Placement, They Will Expand On Their Own. Efficient Debris Blocking: Blocks Leaves, Roof Moss, Twigs, And Other Debris, Ensuring Your Gutters Remain Unclogged. Flexible Adjustment: Bends And Expands To Fit 2'' To 4'' Rectangular And Circular Downspouts. Versatile Use: Suitable For A Variety Of Locations, Including Homes, Garages, And Office Buildings. Revolutionize Your Rainwater Management With Our Gutter Downspout Guards, Expertly Designed To Keep Your Drainage Systems Free From Obstructions, Promoting Optimal Functionality.