The Bosch SMT 500 Leak Tester is designed to find all kinds of leaks in automotive applications including vacuum, EVAP exhaust, oil, manifolds, EGR valves, seals, gaskets, brake vacuum hoses, cooling systems, wind and water leaks, and more. Utilizing an on-board micro air compressor, the SMT 500 eliminates the need for an external compressed shop air source so technicians can quickly diagnose, locate and repair leaks whether the repair job is across the service bay or across town. The variable flow control and OEM-approved smoke agent can help detect leaks as small as 0.01" in low pressure sealed systems.