2016 AHP Alpha-160ST 160 Amp Arc/Stick Welder Dual Voltage 110v / 220v none Imported 2018 MODEL 2018 MODEL 2018 MODE L2018 MODEL 2018 MODEL AHP Alpha 160 ST stick welder / 120v /240v Dual Voltage DC Stick / Lift TIG function / Full 120 amp output on 120 v / 160 amps on 240v In Stick function machine has easy arc start and weld characteristics for a stable arc Full 60% duty cycle at 40 C / Inverter technology using PWM technology / Dependable heavy duty component design