a kit for adapting tungsten - inert - gas welding torches of conventional design to use high amperage current . this comprises an internally and externally screw - threaded tube of highly conductive heat - resistant material which is designed to screw onto a cable housing terminal on the torch body , an insulating gasket which seats against an external shoulder of the torch body , and an insulating sleeve which fits over the internally and externally screw - threaded tube in place on the cable housing terminal , and seats against the gasket . this combination provides gripping means for the operator of the welding torch while dissipating the heat generated by the high operating current .