About This What You Will Receive: you will get a sewer inflatable plug; Suitable for sewage pipeline inspection, maintenance, and water blocking experiments, etc. the steel chain and ring handle feature acts as a robust anchor, effectively preventing the plug from sliding down the line Made of: test ball pipe plug crafted from 4.5mm thickened natural rubber, with dimensions of about 2x3.5 inches, suitable for 2 inches pipe, offers expandability and memory How to Use: please check the tube size before use, the inside of the pipe must be clean, and the surface must be free of burrs, otherwise, the tightness will be affected; Only use a manual pump to inflate the water heating test ball, and the maximum working pressure must not exceed 2.18 PSI Many Uses: toilet plug adopting explosion proof technology, the skirt belt prevents air leakage, with pure copper valves, good sealing; Double pull ring design, more convenient and effortless to pull out Storage Method: when not in use, keep in a cool and dry place, away from strong acid substances, you can apply a layer of talcum powder on the surface and seal it in a plastic bag to extend product lifespan Overview Material : Rubber Brand : Glooglitter Color : Black Product Dimensions : 2.36"W x 1.77"H Item Weight : 0.22 Pounds