Locates leaks in turbo, intake and cooling system by plugging the output side of the turbo and intake side Services Heavy Duty class 6, 7 8 vehicles Air is pressurized through one end of the adapter to show the presence of leaks within the system Kit includes a pressure gauge, shut off valve and pressure regulator 3 pairs of stepped adapters Included adapters sizes: 105mm / 110mm 115mm / 120mm 125mm / 130mm NOTE: For standard sizes see to CTA #7912