It is designed specifically to perform dent pulling on ALUMINIUM. Using M4/M5/M6 studs, this device allows eliminating the bump and impacts (door panel, hood, ...) without stripping. It can also be used for steel dent pulling uning steel studs. Micro-processor controlled with touch screen * the studs which is used (6 studs, ALU M4/M5/M6, STEEL M4/M5/M6) * no need to select the welding voltage. Automatic gun The gun has no trigger; the welding is automatic when the tip slides into the gun. The earth terminals are integrated to the gun.