The Mastercool Heavy Duty Truck Diagnostic Smoke Machine, No. 43060-HD, is designed for all heavy duty truck intakes, exhaust, vacuum lines and components, cabin air and water leaks, and more. It is not for EVAP testing. Accessories include 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.