A must have for plastic welding. We recommend that mesh be used when a tear goes to the edge of the plastic. It's made from stainless steel, so it's five times stronger than regular aluminum wire screen. You can also use the mesh to fabricate tabs, fill holes, and provide reinforcement in any thermoplastic (meltable plastic). Each sheet of mesh is 5 inches (12.7 cm) by 10 inches (25 cm).