This handy detector allows the technician to pinpoint all manner of system leaks including the air intake, cooling, evaporation, fuel, exhaust & vacuum systems. Fast & simple to use, this unit features single button operation, flow control valve & auto power off. Uses mineral oil* & workshop air to generate smoke at low pressure while connected to a vehicle. System is clean & quick to use & connects to a 12V vehicle battery. Supplied with four different sizes of blanking cones. * Mineral oil not included.