Conventional Dent pullers require that you drill a series of holes in the sheet metal, which can weaken the panel. The Stud Welder System spot welds pins to the surface of the metal. Then use the included slide puller to pull the dent out. After the dent has been repaired, simply snip off the pins, then grind off the remainder. The result-a great looking repair with minimal filler use. Includes 110 V Self-contained Stud Welding Gun, Custom Slide Puller, and 2 mm draw pins (100 count). 5 year manufacturer’s warranty.*