Stable Performance: the sewer pipe plug is made of quality High-quality materials for maximum expandability, which ensures a tight seal; Stainless steel wing nuts, which are more durable, stable and firm; You can use these plugs for a long time 6 Inch Sewer Pipe Plugs: you can get 1 piece of already assembled sewer cleanout cap, 6 inch size can meet your daily use and replacement needs, threaded pipe water stopper can help prevent the tubes from breaking, and help you protect your sink pool as well as the plumbing Practical Usage: this mechanical test plug can be applied as tube plugs to plug storage devices, and threaded pool return tube plugs are suitable for any pipe; You can use it in your outdoor swimming pool, kitchen and , and small indoor swimming pools Easy to Use: these expandable rubber plugs can guard your tubes by preventing water from entering the tubes; You just simply screw the plugs into all return and drain inlets after blowing out lines, no wrench required, with proper dimension, convenient to handle and use, 't take you much effort Widely Applied: this pipe plug is applied as a tube plug, which can return and avoid entering tubes in winter; This expansion plug also has other uses, such as testing the pressure of pool and preventing flow from the pool during equipment maintenance size: 15cm Material: Rubber + stainless steel colour: silver+black Package Contents: 1 x Test Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.