Lincoln Marquette K3290-2 DC Inverter Stick Welder 90 Amp 120V Welds 1/4 Steel. DC Inverter Stick Welder. The AutoPro 90S can be used anywhere there is a 120 Volt power source. Through the use of solid state, inverter-based technology, the Auto-Pro 90S can produce the same results as a transformer based AC stick welder. The AutoPro 90S is small, compact & portable. The AutoPro 90S can be carried around like a light-weight briefcase. With a simple one-knob control, you can enjoy the smooth arc, small spatter & stable welding current found with DC stick welding. 10′ work cable with small dins connector & clamp. 10′ work cable with Electrode Holder & small dins connector. Shoulder Strap for portability. 6′ Input Cable with attached plug. 10-90 Amp DC Output. Welds up to 1/4 mild steel. Compact, portable, light weight & easy to use. Great for home repair & hobby projects on light gauge mild steel found around most households. Select amperage range for precise control. Fan-cooled for long life expectancy. Please check out our other auctions.