Durability: the antifreeze tester adopts high-quality plastics and rubber materials to easily test the freezing and boiling temperature of the coolant in aqueous solution; large rubber balls and rubber pipes can easily inhale liquids into small plastic containers Precision: high-precision, easy-to-read scale and pointer. It is calibrated under°C and °F to facilitate testing. The freezing point can prevent cold and the boiling point can prevent summer Quickly test the coolant tester to quickly understand the coolant state. The transparent capsule contains sensitive pointers, which can measure the solidification point and boiling point of the liquid at the temperatures of Celsius and Fahrenheit Efficacy: suitable for winter and summer use, which helps to avoid freezing or overheating Applications:this density meter is suitable for testing hot or cold batteries on 6-volt and 12-volt systems. Easy to use, simple to operate, light and convenient to carry is a practical tool for accurately detecting antifreeze, Manufacturer: XINGBEI