Description: Ensure coolant is in an aqueous solution with this easy-to-use coolant tester. Made from durable ABS and rubber materials, it's light and suitable for testing any vehicle's antifreeze coolant with ease. Avoid freezing or overheating with confidence. Specification: Product Name: Coolant Tester Product material: rubber, ABS Product weight: about 120g Product size: length about 26.5CM (10.43inch) Instructions: First, remove the liquid filling hole cover on the battery, then put the lower end of the densitometer into the battery, pinch the rubber ball on the upper part of the densitometer, loosen the rubber ball slowly, suck the electro-hydraulic into the glass tube, and make the inner colored disk float, the reading can be read through the floating position. Product details introduction: The tester checks the status of the coolant antifreeze (hot or cold). The freeze protection level is indicated by 6 colored disc numbers floating in the sample. An easy-to-read thermometer in a rugged case. Testing is still possible in hot and cold temperatures. The number of floats indicates the level of frost protection. Tested at high and low temperatures in C and F. Floating orange discs show overprotection and reduced efficiency. Antifreeze over 70% will provide less protection. Pure antifreeze freezes at minus 6 F. Packing List: Coolant Tester x 1 Note: When reading, the observation line of sight should be parallel to the liquid surface. Reminder: Product size/pictures are manually measured and taken, please forgive a little deviation. See more product details 1.Precise and Fast Testing: Ensure your coolant is in good condition with this high-precision tester. It accurately measures the freezing and boiling temperatures of coolant in an aqueous solution using an easy-to-read scale and pointer calibrated in C and F. Prevent engine damage with ease. 2.Freezing and Boiling Point Measuring: This coolant tester is ideal for winter and summer, as it can measure the boiling point for summer protection and the freezing point for winter protection. Avoid freezing or overheating your engine with this handy tool. 3.Robust Build: ABS and rubber materials make this coolant tester durable and temperature resistant, ensuring a long lifespan even in extreme conditions. 4.Handy Must-have: Ensure your engine's safety with this coolant tester. It's light, easy to carry, and features simple and convenient operation. A reliable and practical tool you can use anytime and anywhere. 5.Simple to Use: Quickly test any vehicle's antifreeze coolant with our Coolant Tester that works on marine antifreeze, camper, and RV coolant. Just insert the tool into the reservoir, squeeze the bulb, and read the freezing and boiling points of your coolant. _x000D_