Check the listing for details. Durable Turbo System Leakage Tester Turbo System Boost Press Stepped Adapters. Condition: New. Listed at 84.92 USD. Specification: Size of 4 pairs of stepped adapters：35, 40, 45 mm (1.38'', 1.57'', 1.77''); 50, 55, 60 mm (1.97'', 2.17'', 2.36''); 65, 70, 75 mm (2.56'', 2.76'', 2.95''); 80, 85, 90 mm (3.15'', 3.35'', 3.54'') The pressure gauge measures in the range of 0-6 bar（0-86 psi） Standard gas inlet types：US/EU/JP STANDARD AIR INLETS Package included:1 set *Turbo System Leakage Tester Set Applicaition: The pressure leak tester helps you charge the turbo system with low pressure from the main air supply, inspecting and locating leaks in various vehicle turbo systems.4 pairs of stepped adapters: Each adapter features 3 carefully designed steps to ensure secure fitting onto hoses of different sizes. The outer diameter of each pair is as follows: 1-3/8", 1-9/16.