Features and Benefits:?For 240 volt airless plastic welders.?Wires into the temperature control box.This is the replacement element for the Mini-Weld Model 7 Airless Plastic Welder. The previous design had a Ni-Chrome wire that, like a light bulb, would seem to burn out at the most inopportune time. This design, however, has a ceramic element that lasts WAY longer. Here is another great thing about this element. In the unlikely event that the ceramic core burns out, you can replace just the ceramic core! Of course, what is more likely to happen is that the ceramic element will break if you happen to drop the element assembly.