Rotary amperage controls provide welding machine contactor on-off, activate gas and/or water solenoids, and provide full range current output control. Handle styles include Velcro straps where one size fits all handle diameters and retrofits easily on all makes of torches or build into the handle as original equipment. A built in strain relief prevents the control cord from being pulled out or damaged.. Replace foot pedal amperage controls with fingertip operated amperage controls. Velcro strap allows amperage control to quickly mount on any TIG torch or Stick electrode holder. Amperage controls available as a complete handle assembly. Fits most popular TIG machines.