3-inch (about 7.6 cm) sewer water pipe plug: You will receive 1 piece of 3-inch (about 7.6 cm) pre-assembled sewer cleaning cover; it is suitable for daily use; the threaded pipe water stopper helps prevent pipe damage and protects sinks and pipes. Stable performance: The sewer pipe plug is made of high-quality rubber and metal, offering maximum expandability to ensure a tight seal; the stainless steel wing nut provides greater reliability, stability, and strength compared to plastic wing nuts; designed for long-term use. Easy to use: This threaded rubber plug provides effective protection against water entering the pipe; simply screw the plug into return and drain inlets after cleaning the pipe—no wrench required; the size is convenient and operation is straightforward. Wide usage: This water pipe plug can be used to seal pipes during winter to prevent freezing; it is also suitable for pressure testing applications, such as pool equipment maintenance, and for preventing water flow during service. Practical design: The mechanical test plug can be used as a pipe plug for storage devices; the threaded pool return pipe plug fits standard pipes; suitable for outdoor swimming pools, kitchen sinks, bathroom sinks, and small indoor pools. Includes: 1 x Sewer Water Pipe Plug