7 Electric plasma cutters; welding electrodes; welding generators; electric welding machines; welding equipment, namely, TIG welders, MIG welders, and stud setters; replacement parts for welding guns and welding torches, namely, tips, nozzles, electrodes, electrode holders, contact tips, conduits, conductor tubes, retainers, diffusers, gas diffusers, insulators, nozzle retainers, cups, handles, collets, collet bodies, gas lenses, [ gasket insulators, ] nozzle gaskets, torch heads, o-rings, cup gaskets, back caps, water hoses, gas hoses, tungsten holders, tungsten grinders, tungsten electrodes, torch bodies, welding hoses, and coolers for welding equipment; gas welding guns; welding torches; electric arc welders