1. High quality materials: The antifreeze tester is made of high quality rubber and ABS, which is wear resistant and durable.2. Function: The Automotive Antifreeze Tester is designed to easily test the freezing and boiling temperatures of your water coolant solutions quickly and accurately. 3. CLEAR GLASS HOSE: Clear glass hose allows you to inspect antifreeze condition, easily inspect color, rust, mud or other sediment.4. High Accuracy: Easy to read with scale and pointer. Calibrated in ? and ?, measures freezing point for winter protection and boiling point for summer protection.5. Application: Antifreeze Coolant Tester is suitable for testing hot or cold batteries on both 6 and 12 volt systems. Specification:Item Type: Antifreeze Coolant TesterMaterial: Rubber + ABSCompatibility: Compatible with 6V and 12V batteries Package list: 1 x Antifreeze Coolant Tester Note: 1.Manual measurement allows small tolerances.2. When reading, the line of sight should be aligned with the liquid level. Note: The data is manual measurement, please allow 1-166cm error, due to differences between light and screen, there will be a certain color difference, the specific received in nature prevail.