Features and Benefits:Compact, heavy-duty design for years of reliable serviceOperates on shop air or inert gasQuick smoke generationBuilt-in safety pressure relief valvePressure can be regulated from 0 to 28 PSILarge easy to read pressure decay gauge 0 to 30 PSINon-toxic and non-corrosive smoke10� 12V power cables with durable clampsHeavy-duty 10� smoke injection hoseVelcro strap for hose and power cable storageFor all HD truck intakes, exhaust, vacuum lines and components, cabin air and water leaks and much more. Not for EVAP testing Accessories included: two large inflatable block-off bladders with safety chains, 6” rigid smoke stack ring, pressure sensor port adapter, oxygen sensor port adapter, temperature sensor port adapter, high intensity battery powered smoke illuminating flashlight and 8 oz smoke producing fluid.