Description: Easily test any vehicle's antifreeze coolant with this automotive antifreeze tester. Made of durable ABS and rubber materials, it can accurately determine the freezing or overheating point of antifreeze in an aqueous solution. With a lightweight design and simple operation, avoid costly repairs and keep your engine running smoothly. 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.Enhanced Accuracy Testing: Determine coolant condition with ease using this high-precision tester. Accurately measure the freezing and boiling temperatures of the coolant in an aqueous solution with the calibrated scale and pointer in C and F. Prevent engine damage effortlessly. 2.Efficient Engine Care: Ensure your engine performs at its best with our Coolant Tester. Its all-season capability accurately measures the boiling point for summer protection and the freezing point for winter protection. Keep your engine protected against overheating and freezing hassle-free! 3.Reliability Assured: Crafted with ABS and rubber materials, this coolant tester has a sturdy construction that can resist changing temperatures. With its robust build, it's built to last for a long time without getting damaged. 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.Versatile Testing: Test marine antifreeze, camper, and RV coolant effortlessly with our Coolant Tester. Insert the tool into the reservoir, and squeeze the bulb to determine the optimal freezing and boiling points of any vehicle's antifreeze. _x000D_