Features:Material: Made of chrome steel material, reusable, rust resistance, difficult to damage to Use: Install Stopper on the matching wrench, insert it into the PPR pipe obliquely, rotate and tighten till the water stop, welding the pipe with a sizzling soften machine, and take out the Stopper after the welding is done Stopper: Three sizes of 1/2, 3/4, 1&;&;&;, Lightweight and simple to carry, and can be used for overhaul and repair works and drinking water work: Put into the water pipe, in order that the rubber loop expands to achieve the purpose of water stop: Widely used for indoor and open air concrete slab cracks, via wall pipes, wall corners, tunnels, and different water leaks, with a water stop function. Specification: Material: Stainless SteelColor: BlackSize: 1/2&;&;, 3/4&;&;, 1&;&; Package Contents: 1 Set Hot Melt Stopper with Rubber Cover Note: 1. The real color of the item may perhaps also be barely different from the pictures shown on web content brought on by many elements reminiscent of brightness of your display screen and light brightness. Please enable slight instruction manual size deviation for the data.