The Nitroweld NW-650 is a complete plastic welding station with built-in temperature controllers, including nitrogen (N2) and compressed air selection. This unit can be used with an external nitrogen tank or a nitrogen generator. If used with a cylinder, the built-in selector allows the user to pre-heat and cool down with compressed air and only use the N2 supply for direct welding. NitroWeld’s super-heated nitrogen gas melts and bonds broken bumper skins, headlight tabs or plastic radiators with a repair that cools and dries in seconds. The unit allows you to repair original materials with the same material, to increase your success rate.