Advanced Function:The pressure leak tester tool kit is perfect for detecting the internal and external leakage of cylinder, as well as detecting gasket failure to find out which side is blocked or which cullinder leaks. You can avoid the issues resulted in the coolant and reduction, such as high engine temperature, low oil viscosity and other serious issues by regular checking with the tool Easy Operation:It is easy to operate the water tank leakage detection tool, usually takes about 10 minutes to detect the leakage. You can select an available radiator cap and install it on the radiator opening, then operate the handpump until the pressure is up to 10-15 psi (note: not up to 35psi). Then please notice the gauge reading, if the reading automatically, it means that it leaks in the radiator. The radiator system needs to be inspected and repaired if necessary Necessary Accessories:The coolant tester kit includes 1* hand pump with pressure gauge, 10* anodized plastic cap adapters, 3* Chromed steel cap adapters, 1* thermometer, 1* universal tapered rubber adapter, 2* connectors in yellow and white and 1* carrying case. All the adapters are distinguished by different colors and numbers marked on it, which is easy to be without any confusion. The index range of thermometer is 0 to 200 (32 to 400) Wide Applications:The radiator pressure tester kit is provided with 13 pcs of different cap adapters. 3* Chromed steel cap adapters are designed for trucks and 10* anodized aluminum cap adapters are designed specifically for cars. Noted that it is not compatible for e46 Expansion Tank The color of the pump is random and not fixed Colour:Red Material:Metal Package Contents: 1x Water Tank Leak Test Detector Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.