PrimeWeld Ct520d 50 Amps Plasma Cutter, 200 Amps Tig Welder and 200 Amps Stick Welder Combo Combines plasma cutting, TIG/stick and arc welding functions in 1 Input power frequency: 50Hz / 60Hz Power efficiency: 85% 3 year Warranty, USA Based Parts and Customer Service 7 days per Week