The Killer Tools Plastic Repair System, No. ART73, is nitrogen free and features a digital temperature read out to prevent the plastic from overheating. It comes with an EZ Weld Guide to match plastic rod, temperature, and flow. The ART73 also has an integrated professional hot stapler with two heat settings, twin LEDs, and three staple settings. The welding wand automatically shuts off when put back in the cradle. The unit comes complete with cart, rotary file, aluminum tape, smoothing wand and plastic rods, and stainless steel staples. Built in the U.S.A. with a five-year warranty.