Description This item is a device measures the proportion of anti-freeze or corrosion inhibitor in your cooling system. Level pointer and scale pointer is easy to read. A must have device for car owner. Features - - Material: Plastic - Size: 19.00X7.00X4.00cm/7.47X2.75X1.57in - Check your radiator coolant with this device. - Check if your car has enough anti-freeze or corrosion inhibitor in your cooling system. - Your car engine will overheat without water. - Capable of measuring with high accuracy and provides precise results. - Dial type for easy reading the reading. Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Check your radiator coolant with this device. - Antifreeze refractometer Capable of measuring with high accuracy and provides precise results. - Auto antifreeze tester Check if your car has enough anti-freeze or corrosion inhibitor in your cooling system. - Glycol tester Your car engine will overheat without water. -Antifreeze tester Dial type for easy reading the reading.- Battery tester