Car Battery Hydrometer Tester Precision Gravity Float Acid Quality Analyzer Density Meter Fast Detection ToolFeatures Large Floating Discs: Each colored disc in the AntiCoolant Tester is designed to float at a different specific gravity, floating more as specific gravity increases Fast Detection: Our professional hydrometer quickly and easily draws liquid with the onepiece rubber bulb and neoprene tip, offering results in seconds. High Quality Materials: Anti freeze tester is made of high quality rubber and ABS material, wear resistant and durable. Clear Glass Pipe: Clear glass pipe allows you to inspect the condition of the antifreeze, easily inspect color, any rust, sludge, or other sediments. High Accuracy: Easy to read with scale and pointer. Calibrated in and , measures freezing point for winter protecting and boiling point for summer protecting. Function: Automotive antifreeze tester is designed to easily test freezing and boiling temperatures of your coolant to water solutions, fast and accurate. Specification Item Type: Coolant Density Specific Gravity Tester Material: ABS+Rubber+Neoprene+Glass Fitment: Universal for car Package List 1 x Coolant Density Specific Gravity Tester Note When reading, observe the line of sight should be parallel to the liquid level.