The i4 Inverter Resistance Spot Welder allows us to duplicate the factory spot welds on your car or truck. These spot welds are indistinguishable from the original welds on your vehicle and also provides a more structurally sound and all around better weld that from traditional MIG welding. The i4 Inverter Resistance Spot Welder is designed to handle the difficult to weld materials such as boron steels and Advanced High Strength Steels (AHSS). These new metals are rapidly becoming the material of choice among car manufacturers. The i4 includes an Original Equipment Manufacturer (OEM) programmable feature with detailed repair illustrations and customized weld programs for all makes and models of vehicles on the road. This enables us to a better auto body repair and so your vehicle is back to the way it was before the accident.