This is a US5500HT Airless Plastic Welder. Repair cracks & holes in virtually any type of plastic. Use on cars, motorcycles, airplanes, etc. Repairs problem plastics like TPO & polypropylene with the revolutionary FiberFlex unviersal repair rod. Reinforce a repair by melting stainless steel reinforcing mesh directly into the plastic. Learn how to do any type of plastic repair. Quickly & easily with the included instructional DVD.