Remote Amperage controls provide welding machine contactor on-off, activate gas and/or water solenoids, and provide full range current output control. Handle style include Velcro straps where one size fits all handle diameters and retrofits easily on all makes of TIG torches.. Returns to off automatically. Insures electrodes not "hot" when not in use. Great for tack welding, short or long welds, and bumping technique. Spring included in instillation instructions. Can be positioned closer to torch head for optimum torch control.