1、Lightweight: Made of aluminum, non-corrosive, waterproof and weather-resistant, will stay firmly in place and you'll not have to climb up the roof again to re-install them. 2、Expandable: Flexible to fits most of sizes downspouts of various sizes 2 to 4 inches ( rectangular and circular gutter ). 3、Easy to install: No tools required, simply push them into place and you're good to go. 4、Gutter Guard Strainer: By keep leaf debris, twigs, roof moss and dirt away from clogging your gutters and downspouts, you can easily make sure that your guttering system stays in nice condition for longer without the need for costly repairs and constant unclogging 5、Quantity: We provide you different quantity set, 4 pcs, 8 pcs or 12 pcs, various choices meet you different needs.