The unit features high frequency start tig and includes a foot pedal for great tig welding control and operation * The stick welder operates on 110v and 220v volts and is capable of welding 7018, 6013, and other stick welding electrodes * With the flip of a swtich, you are able to weld aluminum in AC mode. Features pre-flow, post flow, and clearance effect (balance) function for greater welding control * Great machine for the hobbyist or professional with an easy to use panel. Excellent heat control * Extemely portable weighing 37 lbs and easily carried to any job on site or offsite. The 110v adapter makes it easy to connect to a standard usa outlet.