Precise Adaptation, Flexible Expansion Universal Interface Design: The extension tube is adapted to 3 "x4" and 3 "x2" rainwater disperser interfaces, convenient installation and strong compatibility. Adjustable length: Provide a variety of length options, can be flexibly cut or spliced according to the actual needs, to meet the needs of different scenarios. High-quality material, durable and anti-aging HDPE material: made of high-density polyethylene, UV-resistant, corrosion-resistant, anti-aging, and long service life. Flexible: the pipe is flexible and can be bent to adjust the direction to adapt to complex drainage paths. Efficient drainage, anti-clogging design Smooth inner wall: smooth inner wall, low resistance to water flow, high drainage efficiency, reducing the risk of clogging. Leak-proof design: Sealing design at the interface prevents rainwater leakage and protects the foundation of the house. Convenient installation and easy maintenance Lightweight and easy to operate: the pipe is lightweight, easy to carry and install without specialized tools. Detachable design: the extension pipe can be easily detached for easy cleaning and maintenance.