Analog flow gauge for repeatable performance every time. Element protection circuitry to help prevent burning out heating elements. Precision flow regulators on both the air and nitrogen sides. Outlet pressure gauges for both air and nitrogen. Electric air/nitrogen selector switch. Compact, easy-to-handle welding torch gets into tight spots with no user fatigue. Melt-proof silicone & fiberglass braided hot air welder hose. Easy-to-use, intuitive controls. Integrated airless welder control to allow for repair of thermoset PUR. Easily replaceable heating element. Heavy-duty, made-in-USA welding cart with built-in holders for heating elements and tools.Air manifold with auxiliary outlet for attachment of air tools. Integral power strip.