Features and Benefits:•Works with airless, hot-air, and nitrogen plastic welders.•Thick profile gives better bending resistance.Make super strong welds on TPO and polypropylene bumper covers using this thick polypropylene strip. This thick strip works well to prevent bending in the repair area and, therefore, prevent a rebreak in the same area. Best when used with a hot air welder or, even better, a nitrogen welder. Each polypropylene welding piece is 1 foot long (30 cm), 1/2 inch (12.7 mm) wide and 3/32 inch (2.4 mm) thick. No pigment has been added so the color is the natural color of polypropylene. There are approximately 64 rods per pound (0.45 kg).