The Hobie KC Welder Pro has an 80 Watt element, flat tip and a 3/16" extruder hole in polyethylene plastic repairs. Includes a selection of Hobie color polyethylene welding rods. Suitable for hairline cracks, but not major damage. Insert the plastic rods into the tip and place against the tip against the surface to be welded. The tip heats up the plastic surface. As the plastic melts, move the tip over the repair area while pushing the plastic rods into the tip to fill the repair area with new heated plastic.