We recommend this easy to install, flexible and durable gutter downspout extension! This extension, with an inner diameter of 2.6 in. and an outer diameter of 3 in. is specially designed for 2 x 3 in. and 3 x 4 in. downspouts, making it easy to fit into any drainage system. With a retractable and corrugated design, this extension is not only easy to bend to maintain the desired shape, but also extends from 2.1 ft. to 7 ft. to meet your diverse drainage needs. Each pipe is equipped with screws to ensure stable installation, and you no longer have to worry about rain washing away your pipe, so that drainage is more secure. We understand the importance of durability for outdoor drainage equipment, so this extension uses high-quality heavy-duty plastic and high-quality PE piping to ensure that the hose does not tear, crack, crease, hole and crack free, and is more durable than other products. It can maintain excellent drainage performance no matter the storm or the scorching sun. In addition, this 7 ft. rain tank downspout extension effectively diverts rainwater to other locations, preventing foundation damage and keeping your home safe. The package includes a 7 ft. gutter downspout extension, a package of screws, a 2 x 3 in. connector, a 3 x 4 in. connector, and an installation manual for easy installation and worse-free drainage.