Sewer Cleaning Cap, Sewer Pipe Plug, Rubber Sewer Cleaning Cap, Expansion Pipe Plug, Mechanical Test Plug for Pipes, Sinks, Pools (3") 3 Inches g20241701304 Premium MaterialThis sewer cleaning cap is made of rubber and metal, ensuring maximum expansion for a tight and secure seal. The stainless steel offers superior stability, reliability and durability compared to plastic. Easy to UseWith this expansion pipe plug, you can effortlessly protect your pipes from water intrusion. Simply screw the plugs into all return and drain inlets, no wrench required. It offers convenient and hassle-free use. Practical Use: This sewer pipe plug serves multiple purposes. It can be used as a pipe plug for storage devices and fits most pipes as a threaded pool return pipe plug. It is suitable for various applications, such as kitchen and bathroom sinks, outdoor pools or small indoor pools. Wide Application: Apart from being a pipe plug, it can also be used for other purposes, such as pressure testing the pool and flow during equipment maintenance. Its versatility makes it suitable for a wide range of applications.