JOUNJIP PolyPlaz welding rods are created from a special blend of plastics that bonds to almost any plastic. They are formulated with carbon and glass fibers for extra strength and flexibility. These ribbon rods can be used for most types of popular thermoplastic welding jobs including TPO, TEO, and PP bumpers as well as kayak, canoe, and other plastic repairs. Provides a sturdy weld. Can be used with JOUNJIP Stainless Steel Mesh for additional strength (sold separately). Package includes 20 white, 9-inch, flat ribbon rods. Each Rod is a 3/8-inch width, 3/32-inch height and 9-inch long. Melting temperature: 300° F. For use with either airless or hot air plastic welders. Not compatible with Polyurethane (PUR) or Polycarbonate (PC).