This complete turbo boost leak tester kit includes a 0-150 psi high-pressure gauge with an on/off valve, a 0-60 psi adapter pressure gauge, and a pair of 6061 aluminum alloy couplers compatible with 4"/3.5"/3" pipe diameters. It supports high-pressure sealing tests for intake piping as well as low-pressure leak checks on the turbocharger itself, making it ideal for everything from routine maintenance to professional work. | Vevor | | Turbo Boost Leak Tester Kit, Compatible with 3"/3.5"/4" Pipe, 0-150 PSI Valve Gauge & 0-60 PSI Adapter Gauge | Black,Orange | Black/Orange | Best Buy