Kit includes - 3 sizes: 1/2 inch, 3/4 inch and 1 inch, a release pin, a t-wrench and extra rubber boot, and easy to carry! To use - first attach the water stop pin to the appropriate wrench, then, insert it into the pipe at an angle and turn it tightly to stop the flow of water, weld the pipe using a heat fusion machine, and finally, remove the water stop pin once the welding process is complete. Stable and Reliable - The stopcock for thermally fused water pipes is made of stainless steel, ensuring high pressure resistance and stability. It penetrates the concrete structure seamlessly and effectively prevents leaks. Versatile - With its high heat resistance, it can be used indoors and outdoors for cracks on a variety of surfaces, including walls, corners and tunnels. Application - Not affected by seasonal or weather conditions, suitable for a wide variety of tasks such as overhaul, repair and potable water projects. Product Name:Universal Hot-Melt Water Stop Pin Size:For 1/2Inch; 3/4Inch; 1Inch Colour:As Shown Material:Metal Package Contents: 1 * Pipe Water Stopper Kit 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.