Features: Easy to Use: Install the water stop pin on the matching wrench, insert it into the PPR tube obliquely, rotate and tighten it until the water flows stops, weld it with a hot-melt machine, and remove the water stop pin after the welding is completed. Strong Practicality: The water stop pin has three specifications of 1/4", 1/6" and 1", which are suitable for 20/25/32 PPR tubes. Lightweight and portable, can be used for overhaul, repeirs works, drinking water work, etc. Reliable Quality: Made of high-quality stainless steel and brass, strong and with nice durability, reusable, corrosion resistant, not easy to rust. Wear resistant and antislip rubber pier, not easy to aging. Main Use: Put the water stop pin into the water tube, used to twist the pin to make the rubber loop expand, so as to achieve the purpose of water stop. Application: It can be widely used for indoor and outdoor concrete slab cracks, through the wall pipes, wall corners, tunnels and other water leakage, with water stop function. Specifications: Material: Stainless Steel + Brass Size: 1/4 Inch, 1/6 Inch, 1 Inch Package Size: 150 * 100 * 50mm/ 5.9 * 3.9 * 2.0in Package Weight: 2pcs: 180g/ 6.3oz 4pcs: 280g/ 9.9oz Packing List: 1 * Wrench 1 * Water Stop Pin