Description：Fast, economical and accurate method to test for combustion gas leaksSure diagnosis within a few minutesPositive proof that a leak is present when the tester fluid changes colour on detection of CO₂ gas - if there is a hairline crack in the cylinder head, engine block or damage to the cylinder head gasket, the test fluid turns yellow. Ideal for routine checks and scheduled maintenance workIdeal for engine checks on used carsSpecifications:Volume:    30ml    Material: PlasticSize : 5.5*17CM Color: WhitePackage Included:1X combustion leak detector