-The drain pipe filter cover. -UV resistant. -Material: Black polypropylene. -Suitable for 65mm, 80mm & 100mm outlets. -Easy to install - just shove it into the gutter opening of the downpipe. It can drain water and catch the leaves and other items, effectively preventing sewer from blockage. It won't make water draining slower, keeps the water flow free. Effectively prevents leaves, branches, and debris from falling into the drainage pipe. The design is reasonable, and practical, which can help to catch most of the large debris and easily prevent the water pipe clogging. Three more are available.