GUTTER CLEANING TOOL: The strainer prevents leaves, seeds and other debris from clogging the gutter downspout, keeps the water flow freely. You will still occasionally clean the debris accumulated around the strainer, which is much easier to clean the downspout inside. EFFICIENT STRUCTURE: This design works well for needles. The spherical protection head, the slot gap in the direction of flow make the leaves stop, get dirty and the needles enter the tube. The size can be applied to 2.6-3.7 holes. It is also one of the most beautiful looking gutter guard strainers. BUILT TO LAST: Made of 304 stainless steel. 304 contains at least 18% chromium, which gives it excellent resistance to corrosion and oxidation. It is easy to remove residue and keep shining after long time use. EASY TO INSTALL: Measure the inner size of the downspout, no tools required, just push it into the holes. For smaller holes, you can press or use pliers to shape the mount.