Usage Tips:Comprehensive Package: Each order includes a fully assembled 3-inch sewer cleanout cap, designed to safeguard your plumbing infrastructure. This essential tool prevents pipe breakage by shielding sink pools and pipe entries against debris and external blockages. Superior Construction: Crafted from high-grade rubber and robust metal, our sewer cleanout cover ensures unmatched expansion and airtight sealing. Featuring stainless steel wing nuts over traditional plastic, the design guarantees increased stability and , ensuring reliable, extended use. User-Friendly Design: Engineered for ease of use, our expansion plug facilitates simple installation without the need for additional tools. By tightly sealing drain inlets and return lines, it effectively prevents water intrusion and safeguards plumbing systems in residential and commercial settings. Versatile Functionality: Suitable for a broad range of applications, this cap serves not only as a reliable plug for storage units, pools, and sinks but also as an effective tool in pressure testing and plumbing maintenance. It is compatible with most piping systems and can be employed in kitchens, bathrooms, and outdoor pool areas. Expansive Applications: Beyond typical stoppage uses, our sewer cap is instrumental in testing pool pressures and preventing water flow during equipment maintenance. Its versatility extends to settings, promising utility in domestic, commercial, and industrial environments. The actual product may have slight color differences or differences, which does not affect use. Colour:Black+Silver Material:Metal+Rubber Package Contents: 1x Sewer Cleanout Cap 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.