Aluminum material: The durable filter nozzle is made of aluminum alloy, will not rust, strong and durable, corrosion resistant, wear resistant, long service life and reusable, the material structure is quite strongto withstand all types of weather and sun, as well as long-term use. Adjustable Size: The size of the hole is not sure if you fall, don't worry, the protection of these 3 inch grid gutters can be easily folded and the kettle spout fits your system, which meansperfect and better filtration effect, flexible adjustment to adapt to different pipe sizes, 2 - 4 inches (rectangular and circular kettle spout). Multi - silt: The metal protective tub spout can effectively prevent leaves, stones, dirt, branches, etc., falls and water pipes from clogging the lines and prolonging the service life, youdon't need to clean the pipes multiple times, saving time and effort to connect your sink and pipes. Easy to install: Simply adjust the diameter of the gutter guard to be slightly smaller than the diameter of the gutter downspout, insert and secure it, and also extend it to your gutterto ensure solid support and avoid blockages. Widely used for: Foam metal gutter guards keep the roof, shoots and other dirty animal fasteners, as a practical rainwater pipe protection device, it is often reused enough to meet all the requirements, your home, youcan easily groove, ensure your system stays in good condition longer without costly repair costs and permanent clogging.