High quality: Made of high-quality high-quality aluminum, not easy to rust, strong structure, enough to resist all kinds of weather and sunlight, and provide long service life . Drainage filtration: Hole size: 22 x 11mm, easy to filter out leaves, moss and other kinds of dirt, debris and dirt, prevent downpipes and drains from being blocked . Size: The height is: 16 cm, the diameter can be adjusted from 4.5 to 8.5 cm, suitable for most sizes of conventional downpipes . Easy to use: Just adjust the diameter of the aluminum filter screen to be slightly smaller than the diameter of the downpipe, and then put it in, no tools required . Applicable: No longer to spend a lot of time cleaning up the entire sink and downspout, it can be used to filter debris on outdoor platforms, roofs, gardens, balconies, gutters, roof gutters, etc. .