set2: 1 x Brake fluid tester + 1 x Oil Filter1. Collect contaminants and moisture in the fuel system to allow clean filtered fuel through to the engine.2. Stable characteristics, high reliability.3. Perfect match for the original car, easy installation.4. Aftermarket products with high quality.Color: Black+White/blackMaterial:chip/RubberReference Number: 11427622446Fitment:for MINI Cooper R55/R56/R57/R58/R59/R60/R61.LED Indicator Display:1. green LED = water content in brake fluid H2O Less than 1.5%, brake fluid qualified2. yellow LED brake fluid indicators water content H2O = 1.5% to 3%, can continue to use, the test again after six months3. LED red LED = water content in brake fluid H2O Greater than 3%, can not continue to use the brake fluid must be replacedRed LED: brake fluid replacement4. red LED flashing: battery replacement5. yellow LED: low moisture content, check again in six months6. green LED: brake line fluid / mobile lineTechnical specifications:Green: Battery IN ORDER, that is, the brake fluid does not contain waterGreen / yellow: brake oil in water content less than 1%, better brake fluids performance, ease of use.Green / yellow / yellow: brake oil in water content about 2%, the brake fluid can continue to use.Green / yellow / yellow / red: brake oil in water content of about 3%, the proposed replacement of brake fluid.Green / yellow / yellow / red / red: brake oil in water content of not less than 4%, the brake fluid must be immediately replaced with the responsibility for very dangerous.Package Contents:1 x Brake fluid tester1 x Oil Filter1 x Gasket1 x Rubber RingOnly the above package content, other products are not included.Note: Light 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.