Feature: 1. High Quality Materials: Anti freeze tester is made of high quality rubber and ABS material, wear resistant and durable. 2. Function: Automotive antifreeze tester is designed to easily test freezing and boiling temperatures of your coolant to water solutions, fast and accurate. 3. Clear Glass Pipe: Clear glass pipe allows you to inspect the condition of the antifreeze, easily inspect color, any rust, sludge, or other sediments. 4. High Accuracy: Easy to read with scale and pointer. Calibrated in ℃ and ℉, measures freezing point for winter protecting and boiling point for summer protecting. 5. Application: Anti freeze coolant tester is suitable for testing hot or cold batteries on 6 and 12 Volt systems. Specification: Item Type: Anti Freeze Coolant Tester Material: Rubber+ABS Fitment: Fit for 6V and 12V batteries. Package List: 1 x Anti Freeze Coolant Tester Note: 1.Manual measurement allows for tiny tolerances.2.When reading, the line of sight should be in line with the liquid level.