RIDGID 21338 is an auto-feed drain cleaning machine designed to clear clogs and blockages in drains up to 1/2" (32mm) in diameter and up to 25 ft (7.6m) long. It features a powerful 1/6 HP motor that rotates a 1/4" (6mm) cable at speeds up to 400 RPM, allowing it to easily break through tough obstructions. The machine also has a built-in GFCI (Ground Fault Circuit Interrupter) for added safety and a foot switch for easy operation. With its lightweight and compact design, the RIDGID 21338 is easy to transport and store, making it ideal for both residential and commercial use.